The most detailed and major prophetic discourse of Christ recorded in Scripture (Matt. 24-25). Christ launched into this discourse after weeping over Jerusalem’s refusal to accept Him (Matt. 23:37) and declaring her temple “desolate” (Matt. 23:38), and that on “that generation would come the full judgment of all of the righteous blood shed upon the earth since Abel” (Matt. 23:35-36). When His disciples showed Him the glorious Temple structure as they left (Matt. 24:1) the Lord informed them again that it would be destroyed within “their generation” (Matt. 24:2-3, 34). The disciples are startled and ask Him when this will occur, knowing that if the temple was destroyed it would mean the “end of the age” (Mosaic age). Christ then spoke Matthew 24 – 25 to “them” answering that question of when would be His coming (Parousia) and the end of the age. In Matthew 24 – 25 Christ told them the signs that “they” were to watch for and to know that the final culmination would be when “they” saw Jerusalem surrounded by armies and destroyed (AD 70). That would be the final sign culminating the “days of vengeance, that all things which are written may be fulfilled” (Luke 21:20-22 ) (see the parallel recordings of the Olivet Discourse in Luke 21 and Mark 13. Also, the Book of Revelation was John’s “Olivet Discourse” written in apocalyptic literary style, and in expanded form, as his Gospel is the only one of the four that does not contain this portion of the accounts of Jesus’ ministry, and it was left to be written (AD 62) for just shortly before it all was about to occur.).
[For a more in-depth study see eschatology “Study Series 7 Lesson 1 thru 6 on Matthew 24-25”]