Romans 2:20-23

 

 

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Romans 2:20 a corrector of the foolish, a teacher of the immature, having (PAPMSA) in the Law the embodiment of knowledge and of the truth, (NASB: Lockman)

Greek:  paideuten aphronon, didaskalon nepion, echonta (PAPMSA) ten morphosin tes gnoseos kai tes aletheias en to nomo
Amplified: You are a corrector of the foolish, a teacher of the childish, having in the Law the embodiment of knowledge and truth-
(Amplified Bible - Lockman)
NLT: You think you can instruct the ignorant and teach children the ways of God. For you are certain that in God's law you have complete knowledge and truth. (NLT - Tyndale House)
Phillips: You can instruct those who have no spiritual wisdom: you can teach those who, spiritually speaking, are only just out of the cradle. You have a certain grasp of the basis of true knowledge. You have without doubt very great advantages.  (Phillips: Touchstone)
Wuest:  a corrector of those who are without reflection or intelligence, a teacher of the immature, having the rough sketch of the experiential knowledge of the truth in the law.

(Erdmans
Young's Literal:  an instructor of foolish ones, a teacher of babes, having the form of the knowledge and of the truth in the law.

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Romans Notes in Outline Form
Romans 2:15-29 Man's Desperation for God's Good News
Romans 2 Commentary
Romans 2:17-29 The Fatal Flaws of Religion
Romans 2:17-29 God's Judgment Of The Religious Man
Romans 2 Commentary
Romans: Studies in Romans - 9 Chapter Book
Romans 2:12-29
Romans 2 Commentary
Romans 2 Commentary
Romans 2:1-29 The Coming Wrath of God
Romans 2:1-29 Who Needs the Gospel? They Do Too!
Romans 2:17-3:8 Mr. Churchman 

Romans 2 The Doctor Is Out
Romans 2 Concise Notes
Romans: Prologue to Prison - 24 Chapter Book
Romans 2 Commentary
Romans 2:17-29 Exposition
Romans Notes - Verse by Verse Notes
Romans 2:1-3; 2:4-6; 2:7-16; 2:17-20; 2:21-19
Romans 2 Commentary
Romans 2:17-29 Rite Versus Righteousness
Romans 1 - 7
Romans 2:17-29 Satan's Greatest Lie
Romans 2:17-20 False Security, Part 1
Romans 2:19-29 False Security, Part 2

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Romans 2:17-24 The Subtlety of Hypocrisy
Romans 2:17-24 The Effect of Hypocrisy Part One Dishonoring God

Romans 2:17-24 The Effect of Hypocrisy Part Two Dishonoring God

Romans 2:17-29 Can a Person Be Too Religious?
Romans 2: Greek Word Studies
Romans 2 Exposition
Romans 2:17-3:8 Red Herrings
Romans 2:12-29 According To Light

Romans 2 Greek Word Studies
Romans 2:17-29 Praise God For The Circumcision From Above

Romans 2:17-3:8 Full Mind, Empty Heart
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A CORRECTOR OF THE FOOLISH, A TEACHER OF THE IMMATURE: paideuten aphronon, didaskalon nepion: (Mt 11:25; 1Co 3:1; Heb 5:13; 1Pe 2:2)

a corrector of those who are without reflection or intelligence, a teacher of the immature, having the rough sketch of the experiential knowledge of the truth in the law. (Erdmans

Corrector (3810) (paideutes from paideuo = instruct, correct, chastise from país = child) refers to one who disciplines and corrects by punishment or provides instruction for the purpose of proper behavior. The idea is that of an instructor, trainer, corrector, discipliner, preceptor. This word group related to paideuo (word study) denotes the upbringing and handling of the child which is growing up to maturity and which thus needs direction, teaching, instruction and a certain measure of compulsion in the form of discipline or even chastisement.

Wuest adds that paideutes is...

The word was used by the Greeks of a slave who had charge of a young child, taking him to school and bringing him home again. He had the moral and ethical supervision of the child also. Our word, “pedagogue” comes from  this word. The word is used here of a corrector or chastizer as in Hebrews 12:9. (Wuest, K. S. Wuest's Word Studies from the Greek New Testament: Studies in the Vocabulary of the Greek New Testament: Grand Rapids: Eerdmans)

The only other use of paideutes is in Hebrews...

Hebrews 12:9 (see notes) Furthermore, we had earthly fathers to discipline us, and we respected them; shall we not much rather be subject to the Father of spirits, and live?

The Septuagint (LXX) has one use in Hosea

And the revolters have gone deep in depravity, but I will chastise (Heb = muwcar = discipline, correction; Lxx = paideutes) all of them. (Ho 5:2)

Foolish (878) (aphron [see word study] from a = without + phren = understanding; phren is literally the diaphragm, reflecting that which restrains and figuratively was considered to be the site of all mental and emotional activity = the mind) means literally without reason (without one's mind or intellect), senseless, foolish, stupid, acting rashly. Vine writes that the idea is “want of mental sanity and sobriety, a reckless and inconsiderate habit of mind” (Hort), or “the lack of commonsense perception of the reality of things natural and spiritual … or the imprudent ordering of one’s life in regard to salvation” (G. Vos, in Hastings Bible Dictionary); it is mostly translated “foolish” or “foolish ones”.

TDNT in the note on classical Greek uses says aphron was used to mean

"out of one's mind"...Vaunting human reason is folly (áphrōn, aphrosýnē). The áphrōn is the fool (who denies God) in the Psalms. In Proverbs áphrōn refers to the simple or inexperienced person. phrónimos occurs in Prov. 14:17, and aphrosyne is used for “misdeed” in Jdg. 20:6... (In Josephus)  aphron and aphrosyne denote youthful folly or lack of restraint. (1278).

If you would like a more expanded definition on the meaning of aphron, consider reading through the Scriptural uses in the Septuagint (see the uses below), specifically those in Proverbs (eg, in Pr 10:18 a fool is one who utters slander). This exercise would give you considerable insight in what God says about one who is aphron or foolish.

Aphron is not employing one's understanding especially in regard to practical matters. It is one who is without reason, senseless, stupid, foolish, without reflection or intelligence.

A T Robertson adds that,

Aphron is a hard word for the Gentiles, but it is the Jewish standpoint that Paul gives. Each termed the other ‘dogs.

Vincent writes that aphron means...

Senseless. In Xenophon’s “Memorabilia,” Socrates, addressing Aristodemus, says, “Which do you take to be the more worthy of admiration, those who make images without sense (aphrona) or motion, or those who make intelligent and active creations?” (1, 4:4). Sometimes, also, in the sense of crazed, frantic, but never in New Testament.

NIDNTT adds that aphron means...

senseless, foolish and aphrosune, lack of sense, foolishness (both words from Hom. onwards) indicate by the use of the Alpha-privative that the term is essentially defined by a lack or a negation, i.e. lack of insight and reason. But the possible development of a diseased mind is not excluded here either (Homer, Od. 23, 10-14). aphron can thus mean infatuated (Homer, Od. 21, 102) and aphrosyne can be referred back to mania (Aristotle, Eth. Nic. 7, 6, both times, incidentally, through active intervention of the gods). But the words chiefly describe deficient perception of value and truth. The Hebrew words for fool, foolish and folly are predominantly rendered in the LXX by aphron (115 times, of which 19 have no equivalent) or aphrosune

Here are the 11 uses of aphron in the NT -

Luke 11:40 "You foolish ones, did not He who made the outside make the inside also?

Comment: Jesus called the Pharisees fools for their preoccupation with externals and for their unconcern with character warped by greed and wickedness

Luke 12:20 "But God said to him (in a parable about a certain rich man who sought to build bigger barns), 'You fool! This very night your soul is required of you; and now who will own what you have prepared?'

Comment: Richards writes that " Jesus called the rich farmer a fool for laying up material possessions and ignoring God, the appellation of fool being especially poignant because he was to meet God that very night (Lk 12:20). In each case, willful ignorance is involved. The Pharisees (see Lk 11:40 above) and this farmer refused to take into account what God had revealed to his OT people.  (Richards, L O: Expository Dictionary of Bible Words: Regency)

Romans 2:20 (note) a corrector of the foolish, a teacher of the immature, having in the Law the embodiment of knowledge and of the truth,

1Corinthians 15:36 You fool! That which you sow does not come to life unless it dies;

Comment: I agree with the comment in TDNT - "In 1Co 15:36, Paul is not pronouncing a definitive judgement with his aphron. It is a rhetorical ap­peal for true understanding. To cling to the negative view is to adopt the position of the aphron which is close to that of ungodliness" (TDNT, 9:231).

2Corinthians 11:16  Again I say, let no one think me foolish; but if you do, receive me even as foolish, that I also may boast a little.

Comment: The key term is aphron, ‘fool’: not a dim-witted person or clown, a jester (as in ‘play the fool’), but in the technical sense of the person in Hellenistic-Roman society who had lost the correct measure (metron) of himself and the world around him (Martin, Ralph P. 2 Corinthians. Word Biblical Commentary series. Waco: Word Books, 1986)

2Corinthians 11:19 For you, being so wise, bear with the foolish gladly.

2Corinthians 12:6 For if I do wish to boast I shall not be foolish, for I shall be speaking the truth; but I refrain from this, so that no one may credit me with more than he sees in me or hears from me.

2Corinthians 12:11 I have become foolish; you yourselves compelled me. Actually I should have been commended by you, for in no respect was I inferior to the most eminent apostles, even though I am a nobody.

Ephesians 5:17 (note) So then do not be foolish, but understand what the will of the Lord is.

Comment: So a foolish person meanders through life with no concept nor desire for the will of God.

1Peter 2:15 (note) For such is the will of God that by doing right you may silence the ignorance of foolish men.

There are about 110 uses of aphron in the non-apocryphal Septuagint (LXX) (Note the marked concentration in Proverbs which speaks of wisdom) - 2Sa 13:13; Job 2:10; 5:2, 3; 30:8; 34:36; Ps 14:1; 39:8; 49:10; 53:1; 74:18, 22; 92:6; 94:8; Pr 1:22; 6:12; 7:7; 9:4, 13, 16; 10:1, 4, 18, 21, 23; 11:29; 12:1, 15, 16, 23; 13:16, 20; 14:1, 3, 7, 8, 16, 18, 24, 29, 33; 15:2, 5, 7, 20; 16:22, 27; 17:2, 7, 10, 12, 16, 18, 21, 24, 25 18:6, 7, 22; 19:10, 13, 25, 28, 29; 20:3; 21:20; 22:3; 23:9; 24:9, 30; 26:1, 4, 5, 6; 27:3, 12, 22; 28:26; 29:11, 20; 30:2, 22; Eccl. 2:14, 15, 16, 19; 4:5, 13; 5:1, 3f; 6:8; 7:4, 5, 6, 9; 10:2f, 6, 12, 14, 15; Isa. 59:7; Jer. 4:22; 17:11. Here are some examples from the Septuagint (LXX)...

Proverbs 7:7 And I saw among the naive (Heb = petiy = foolish, simpleminded, naive concerning the complexities of life; Lxx = aphron), I discerned among the youths, A young man lacking sense

Proverbs 10:1 The proverbs of Solomon. A wise son makes a father glad, but a foolish (Heb = kesiyl = a fool, one unable to deal with life in a wise way); Lxx = aphron) son is a grief to his mother.

Psalm 92:6 (Spurgeon's note) A senseless (Heb = baar = a brutish person, one  showing little intelligence or sensibility; Lxx = aphron) man has no knowledge; Nor does a stupid man understand this:

Teacher (1320) (didaskalos from didasko = teach to shape will of one being taught by content of what is taught) is an instructor. The Biblical concept of teaching differed quite radically from secular Greek teaching in the matter of its goal. Whereas the Greek teacher sought to impart knowledge and skills, teaching for the Jew sought to change one’s entire life. The ministry of teaching in the OT sense that carried over to the early Church was therefore concerned “with the whole man and his education in the deepest sense.” It included the intellect, but its final goal was the will. It is notable that of the 58 uses in the NT, 41 refer to Jesus as the "Teacher". 41 of 58x = Jesus!

Here are the NT uses of didaskalos - Mt 8:19; 9:11; 10:24, 25; 12:38; 17:24; 19:16; 22:16, 24, 36; 23:8; 26:18; Mk. 4:38; 5:35; 9:17, 38; 10:17, 20, 35; 12:14, 19, 32; 13:1; 14:14; Lk. 2:46; 3:12; 6:40; 7:40; 8:49; 9:38; 10:25; 11:45; 12:13; 18:18; 19:39; 20:21, 28, 39; 21:7; 22:11; Jn. 1:38; 3:2, 10; 8:4; 11:28; 13:13, 14; 20:16; Acts 13:1; Ro 2:20; 1Co. 12:28, 29; Ep 4:11; 1Ti 2:7; 2Ti 1:11; 4:3; He. 5:12; Jas. 3:1

Immature (3516) (nepios from = negative + epos = not able to talk) means literally not speaking and thus a small child above age of a helpless infant but probably not more than three or four years of age.

Figuratively as here in Romans nepios refers to a person who lacks experience, is untried or ignorant or simple-minded.

Nepios is the term used by the Jews to designate proselytes or novices. Paul uses it of one not come of legal age (Ga 4:1). The writer to the Hebrews used it of one spiritually immature (He 5:13) as did Paul (1Co 3:1) for they cannot eat solid food (spiritually speaking).

Wuest comments that nepios in Hebrews 5:13 means...

an infant, a little child, a minor, not of age, and in a metaphorical sense, “untaught, unskilled.” The idea of immaturity is in the word, and according to the context in which it is found, it could refer to either mental or spiritual immaturity. Paul defines the word when he says that the person whom he calls a babe is “unskillful in the word of righteousness.” Spiritual immaturity is referred to by the word “babe.” Thus those spoken of as of full age are spiritually mature (teleios)

TDNT notes that...

in General Greek Usage (nepios) means “immature,” “foolish.” It is used in medicine for small children in various stages. We also find it on burial inscriptions for small children aged 1 to 10. It may also be used for orphans (denoting their helplessness), and then comes into use for legal minors. It often occurs for children as members of the family along with the wife or mother. (It can also be used for the young of animals or plants.) But the main sense in Greek is “foolish,” “inexperienced,” or “childish” with no necessary reference to children. A person is nepios who is immature in conduct, who shows a foolish confidence in fortune, who does not take account of reality, or who does not heed the advice of philosophers. (Kittel, G., Friedrich, G., & Bromiley, G. W.  Theological Dictionary of the New Testament. Eerdmans)

NIDNTT writes that...

nepios denotes an infant, child or minor in classic Greek. The word can be used in metaphorical sense, e.g. of young seedlings (Theophrastus, Historia Plantarum, 8, 1, 7). Furthermore, the characteristics of the foolish and inexperienced child may be so to the fore that the meaning of child recedes in favour of foolish, inexperienced (cf. Sophocles, Electra, 145 f.). Greek philosophers who wanted to communicate to men true knowledge of the world and the life of reason dismissed with biting sarcasm the unperceptive man with no experience of life as nepios, a fool (cf. Hesiod, Works, 130, 286 ff.; Epictetus, Dissertations, 3, 24, 53).

 

The LXX also translates petî, simple man, by nepios (Ps. 19:8). Whereas the wisdom lit. reproaches the nepios for being simple, i.e. dull and foolish (Pr. 1:32; cf. also 1:22 Aquila), nepios in the Pss. denotes the man of simple faith (e.g. Ps 116:6; 119:130) who stands under God’s protection and pays attention to his instruction. (Brown, Colin, Editor. New International Dictionary of NT Theology. 1986. Zondervan

Detzler writes that nepios...

means "infant." An infant is a young child who is not yet weaned. The Greeks seem to have taken this word from the verb nepeleo (to be without power, impotent, or weak). In other words, an infant is a person who has no power and needs the assistance of parents or guardians.

Hippocrates, "the father of medicine" used the word nepios to describe every child from the stage of a fetus to five or six years old. It is the word used to describe a family relationship: "This is the child of those parents." Aristotle used the word to describe the entire age of childhood. In Plato's writings it portrayed a person who lived in a pretend world of fantasy, in contrast with a realist.

 

The New Testament uses the word nepios on two different levels. It speaks of both a physical child and a spiritual child....

 

The Apostle Paul used the picture of a nursing mother to describe the tenderness of his concern for Christians. He wrote to the Thessalonians that he and his colleagues had treated them as a mother treats her infants, with love and tenderness (1Th 2:7). In fact, this verse probably gives one the clearest pictures of the basic meaning of nepios, that of a child before weaning....

 

In his first letter to the Corinthians the apostle warned them that they were still "babes" in Christ, for they had not grown beyond the basics (1Co 3:1). Paul wanted them to put away childish ways and live like adult Christians (1Co 13:11). (Detzler, Wayne E: New Testament Words in Today's Language. Victor. 1986)

Nepios is used 15 times in the NT -

Matthew 11:25 At that time Jesus answered and said, "I praise Thee, O Father, Lord of heaven and earth, that Thou didst hide these things from the wise and intelligent and didst reveal them to babes.

 

Comment: MacArthur explains that Jesus is referring to "spiritual babes, those who acknowledge their utter helplessness in themselves, to whom God has sovereignly chosen to reveal the truths of His kingdom. It is to the “poor in spirit” who humbly confess their dependency that God makes the way of salvation clear and understandable. By the Holy Spirit they recognize they are spiritually empty and bankrupt and they abandon all dependence on their own resources. They are the cringing spiritual beggars to whom Jesus refers in the first beatitude-the absolutely destitute who are ashamed to lift up their head as they hold out their hands for help. Babes are the exact opposite of the kind of person the scribes, Pharisees, and rabbis taught was pleasing to God. They are also the exact opposite of the imagined ideal Christian touted by many popular preachers and writers who glorify self-assertion and self-worth. The contrast between wise and intelligent and babes is not between the knowledgeable and the ignorant, the educated and the uneducated, the brilliant and the simpleminded. It is a contrast between those who think they can save themselves by their own human wisdom, resources, and achievement and those who know they cannot. It is a comparison between those who rely on themselves and those who rely on God." (Matthew 8-15, Matthew 16-23, Matthew 24-28 or Logos)

 

Matthew 21:16 and said to Him, "Do You hear what these are saying?" And Jesus said to them, "Yes; have you never read, 'Out of the mouth of infants and nursing babes Thou hast prepared praise for Thyself'?"


Luke 10:21  At that very time He rejoiced greatly in the Holy Spirit, and said, "I praise Thee, O Father, Lord of heaven and earth, that Thou didst hide these things from the wise and intelligent and didst reveal them to babes. Yes, Father, for thus it was well-pleasing in Thy sight.


Romans 2:20 a corrector of the foolish, a teacher of the immature, having in the Law the embodiment of knowledge and of the truth,


1 Corinthians 3:1  And I, brethren, could not speak to you as to spiritual men, but as to men of flesh, as to babes in Christ.


1 Corinthians 13:11 When I was a child, I used to speak as a child, think as a child, reason as a child; when I became a man, I did away with childish things.

 

Comment: Paul uses nepios literally here referring to those who have not yet learned to speak.

 

Galatians 4:1  Now I say, as long as the heir is a child, he does not differ at all from a slave although he is owner of everything,


Galatians 4:3 So also we, while we were children, were held in bondage under the elemental things of the world.

 

Comment: Detzler comments that "To the Galatians Paul compared the Jews to infants. They had an elemental knowledge of God's plan, but as a nation they did not mature enough to accept their Messiah (Gal. 4:1). This is not a final stage but a beginning stage of development (4:3). Paul looked for the day when the Jews would grow up and grasp their messianic birthright. (Ibid)


Ephesians 4:14 (
note) As a result, we are no longer to be children, tossed here and there by waves, and carried about by every wind of doctrine, by the trickery of men, by craftiness in deceitful scheming

 

Comment: Clearly Paul is using nepios figuratively to encourage his readers to no longer be spiritually immature saints but to grow in their spiritual maturity. It is good for a person to be born as a baby, but it is unnatural when one remains as an infant. By the same token, believers begin as babies, but they should grow on to maturity in the faith.


1 Thessalonians 2:7 (
note) But we proved to be gentle among you, as a nursing mother tenderly cares for her own children.

Hebrews 5:13 (
note) For everyone who partakes only of milk is not accustomed to the word of righteousness, for he is a babe.

Nepios is used about 26 times in the non-apocryphal Septuagint (LXX) - 1 Sam. 15:3; 22:19; 2 Ki. 8:12; Job 3:16; 24:12; 31:10; 33:25; Ps. 8:2; 17:14; 19:7; 64:7; 116:6; 119:130; 137:9; Prov. 1:32; 23:13; Isa. 11:8; Jer. 6:11; 9:21; 43:6; 44:7; Lam. 1:5; 2:11, 19f; 4:4; Ezek. 9:6; Hos. 11:1; Joel 2:16; Nah. 3:10

Psalm 8:2 (ESV ) Out of the mouth of babies and infants, you have established strength because of your foes, to still the enemy and the avenger.
 

Psalm 19:7 The law of the LORD is perfect, restoring the soul; The testimony of the LORD is sure, making wise the simple (Heb = pethiy = simplicity, naiveté, foolish; Lxx = nepios).

Leo Burke said that...

"People who say they sleep like a baby usually don't have one." The spiritual parallel is when immature, spiritual babes come into a house of God, they require attention. We cannot just let them go, any more than we can put a baby in a crib and just let him grow.

Billy Graham spoke to the issue of maturing babes in Christ...

Being a Christian is more than just an instantaneous conversion—it is a daily process whereby you grow to be more and more like Christ.

Tacitus said,

Among themselves their honesty is inflexible, their compassion quick to move, but to all other persons they show the hatred of antagonism.

In Alexandria the Jews allegedly took an oath never to show kindness to a Gentile. The very privileges which should have produced saints produced arrogant, loveless egotists instead!

HAVING IN THE LAW THE EMBODIMENT OF KNOWLEDGE AND OF THE TRUTH: echonta (PAPMSA) ten morphosin tes gnoseos kai tes aletheias en to nomo:  (Ro 6:17; 2Ti1:13; 3:5; Titus 1:16)

Having (2192) (echo) means to have or to hold in one's possession and the present tense indicates this "having" is their continuous possession.

Embodiment (3446) (morphosis from morphe = stresses essence of one’s nature) refers to the to outward shape and appearance, such as that of a silhouette, which is an outline or shadow of something. The root word morphe emphasizes both the internal and external form and thus refers to the outward display of the inner reality or the essential form of something which never alters.

Webster says that to embody is to form or collect into a united mass (a body) and to give a tangible, concrete form to an abstract concept. The Law is a valid form in which spiritual knowledge and truth are collected together as a comprehensive whole.

Vincent says:

morphe, form is the expression or embodiment of the essential and permanent being of that which is expressed... In Ro 2:20, morphosis is the truthful embodiment of knowledge and truth as contained in the law of God....(He adds that morphe is) not mere appearance, but the scheme, the correct embodiment of the lineaments of truth and knowledge in the law.

Paul uses morphosis to describe the false (spiritually dead) teachers warning Timothy that they are...

holding to a form of godliness, although they have denied its power; and avoid such men as these. (2 Timothy 3:5-note)

Knowledge (1108) (gnosis) refers to “experiential knowledge,” not a mere passing acquaintance.

Truth (225) (aletheia from alethes = true in turn from a + lêthô  = that which is hidden or lanthanô = conceal, this combination meaning out in the open, containing nothing that is hidden) describes the body of reality (facts, events, etc) or the content which is true, or which is in accordance to what actually occurred. Truth is the unveiled reality lying at the basis of and agreeing with an appearance; the manifested, the veritable essence of matter. Truth is the correspondence between a reality and a declaration which professes to set it forth. Words are true when they correspond with objective reality. Persons and things are true when they correspond with their profession. Hence a truth is a declaration which has corresponding reality, or a reality which is correctly set forth. Since God is Himself the great reality, that which correctly sets forth His nature is pre-eminently the Truth. Obviously whatever God says is "the truth", and in fact "the Truth" is actually embodied in the Person of Christ Jesus!

Paul's religious readers (and especially the Jews) fancied themselves as guides, lights,  correctors, and teachers and in so doing they tended to look down with condescension and scorn upon those who did not have access to the Law. The Gentiles sensed this "spiritual pride" or "arrogance" and they resented it.

John discusses the Law and Truth in his introductory comments writing that...

And the Word became flesh (the incarnation of Jesus), and dwelt among us, and we beheld His glory, glory as of the only begotten from the Father, full of grace and truth. 15 John bore witness of Him, and cried out, saying, "This was He of whom I said, 'He who comes after me has a higher rank than I, for He existed before me.'" 16 For of His fulness we have all received, and grace upon grace. 17 For the Law was given through Moses; grace and truth were realized through Jesus Christ. (Jn 1:14, 15, 16, 17)

The truth in its fullness came with Jesus Christ, (Jn 1:14, 17). The law was the pattern that pointed to Jesus, but He was the consummation of truth.

 

Romans 2:21 you, therefore, who teach (PAPMSN) another, do you not teach (2SPAI) yourself ? You who preach (PAPMSN) that one shall not steal (PAN) do you steal (2SPAI)? (NASB: Lockman)

Greek: o oun didaskon (PAPMSN) heteron seauton ou didaskeis (2SPAI); o kerusson (PAPMSN) me kleptein (PAN) klepteis (2SPAI):
Amplified: Well then, you who teach others, do you not teach yourself? While you teach against stealing, do you steal (take what does not really belong to you)?
(Amplified Bible - Lockman)
NLT: Well then, if you teach others, why don't you teach yourself? You tell others not to steal, but do you steal? (NLT - Tyndale House)
Phillips: But, prepared as you are to instruct others, do you ever teach yourself anything? You preach against stealing, for example, but are you sure of your own honesty? (
Phillips: Touchstone)
Wuest:  Therefore, you who are constantly teaching another, are you not teaching yourself? You who are constantly preaching a person should not be stealing, are you stealing? (
Erdmans
Young's Literal:  Thou, then, who art teaching another, thyself dost thou not teach?

YOU, THEREFORE, WHO TEACH ANOTHER, DO YOU NOT TEACH YOURSELF: o oun didaskon (PAPMSN) heteron seauton ou didaskeis (2SPAI): (Ps 50:16, 17, 18, 19, 20, 21; Mt 23:3, 4, 5, 6, 7, 8, 9, 10, 11, 12; Lk 4:23; 11:46; 12:47; 19:22; 1Co 9:27; Gal 6:13; Titus 2:1, 2, 3, 4, 5, 6, 7)

In the Psalms we read a similar accusation in the form of a question...

But to the wicked God says, "What right have you to tell of My statutes, And to take My covenant in your mouth?  "For you hate discipline, and you cast My words behind you. "When you see a thief, you are pleased with him, and you associate with adulterers. "You let your mouth loose in evil, and your tongue frames deceit. "You sit and speak against your brother. You slander your own mother's son." (Ps 50:16-20)

Jesus addressed this hypocrisy in the Jewish religious leaders warning others...

therefore all that they tell you, do and observe, but do not do according to their deeds; for they say things, and do not do them. And they tie up heavy loads, and lay them on men's shoulders; but they themselves are unwilling to move them with so much as a finger. But they do all their deeds to be noticed by men; for they broaden their phylacteries, and lengthen the tassels of their garments. And they love the place of honor at banquets, and the chief seats in the synagogues, and respectful greetings in the market places, and being called by men, Rabbi. But do not be called Rabbi; for One is your Teacher, and you are all brothers. And do not call anyone on earth your father; for One is your Father, He who is in heaven. And do not be called leaders; for One is your Leader, that is, Christ. But the greatest among you shall be your servant. And whoever exalts himself shall be humbled; and whoever humbles himself shall be exalted. But woe to you, scribes and Pharisees, hypocrites, because you shut off the kingdom of heaven from men; for you do not enter in yourselves, nor do you allow those who are entering to go in. (Mt 23:3-12)

Addressing the Jewish lawyers, Jesus declared...

"Woe to you lawyers (experts in the Mosaic law) as well! For you weigh men down with burdens hard to bear, while you yourselves will not even touch the burdens with one of your fingers. (Lk 11:46)

In Galatians Paul addressed the hypocrisy of the Jews explaining that...

those who are circumcised do not even keep the Law themselves, but they desire to have you circumcised, that they may boast in your flesh. (Gal 6:13)

In just a few sentences Paul does away with the false security which they could derive from having the truth. They were not okay. Their lives did not measure up to the truth they possessed ("you condemn yourself" Ro 2:1-note). Remember that much of rabbinic Judaism of Paul's day interpreted the law in such a way that one might consider themselves completely justified by the law; yet Jesus exposed the error of such interpretations. The Scribes and Pharisees sought to keep the law externally and not from the heart. Jesus applied the Law not just to our actions but also to our attitudes.  (Mt 5:19, 20-notes)

Thomas à Kempis rightly said...

“How rarely we weigh our neighbor in the same balance in which we weigh ourselves.”

Teach (1321) (didasko from dáo= know or teach; English = didactic; see study of related noun didaskalia and adjective didaktikos) means to provide instruction or information in a formal or informal setting. In the 97 NT uses of didasko the meaning is virtually always to teach or instruct, although the purpose and content of the teaching must be determined from the context.

To teach means to cause to know, to help one to learn, to impart knowledge or skill, or to carry out the activity of instructing by precept or by practice. To teach is distinguished from to preach, the latter emphasizing the proclamation of the gospel to the non-Christian world.

John MacArthur writes that didasko

refers to the passing on of information-often, but not necessarily, in a formal setting. It focused on content, with the purpose of discovering the truth-contrary to the forums so popular among Greeks, where discussion and the bantering about of various ideas and opinions was the primary concern (see Acts 17:21). Synagogue teaching, as illustrated by that of Jesus, was basically expository. Scripture was read and explained section by section, often verse by verse. (MacArthur, J: Matthew 1-7 Chicago: Moody Press or Logos)

YOU WHO PREACH THAT ONE SHOULD NOT STEAL DO YOU STEAL: o kerusson (PAPMSN) me kleptein (PAN)  klepteis (2SPAI): (Isa 56:11; Ezek 22:12,13,27; Amos 8:4, 5, 6; Mic 3:11; Mt 21:13; 23:14)

External rituals clearly did not produce the internal changes that God demanded and provided for in the Gospel. The Jews considered themselves to be God’s exclusive favorites; but what they failed to see was that these very privileges obligated them to live holy lives. They disobeyed themselves the very law they preached to the Gentiles.

Even if we are believers, we need to be sure we don't read over this section too fast. Paul's arguments should stimulate us all to ask Do I practice what I profess? Do I tell others what is right but then do what is wrong? Do I expect more of others than I do of myself?

Isaiah addressed the wickedness of God's people writing that...

 the dogs are greedy, they are not satisfied. And they are shepherds who have no understanding. They have all turned to their own way, each one to his unjust gain, to the last one. (Isa 56:11)

Ezekiel addressed their dishonesty declaring...

"In you they have taken bribes to shed blood (hired murderers); you have taken interest and profits, and you have injured your neighbors for gain by oppression (loan racketeers, extortionists), and you have forgotten (be oblivious of from want of memory or attention, cease to care) Me," declares the Lord GOD. Behold, then, I smite My hand at your dishonest gain which you have acquired and at the bloodshed which is among you... "Her princes within her are like wolves tearing the prey, by shedding blood and destroying lives in order to get dishonest gain. (Ezek 22:12,13,27)

The prophet Amos also rebuked the Jews...

Hear this, you who trample the needy,