The term Great Tribulation was first used by Jesus in Matthew 24:15 in the Olivet Discourse (Matthew 24-25), in which He addressed His Jewish disciples Peter, James and John (Mark 13:3) who had asked Him "when will these things be (destruction of the Temple - Mt 24:2), and what will be the sign of Your coming, and of the end of the age?" (Mt 24:3)
THE LAST DAYS
Genesis 49:1 Then Jacob summoned his sons and said, "Assemble yourselves that I may tell you what will befall you in the days to come (Hebrew - acharith; Lxx = eschatos hemera = last days [ep eschaton ton hemeron]).
This article includes:
Background: "The Return of Christ" is a glorious event on God's prophetic calendar, but this wonderful doctrine can at times be confusing because some passages are ambiguous as to which aspect of the Return of Christ is being described and many commentaries use the term Second Coming generally to refer to both aspects of Christ's return (some of course because they do not accept a "two phase" return). The following table is an attempt to summarize the differences in the future Return of Christ.