The extended teaching known as the Olivet Discourse is one of the Bible’s most important pertaining to end times prophecy. In it Christ reminds to always be watching for him. He is coming and we do not know when.
As the Old Testament led up to Christ’s first coming, the New Testament has been leading up to this. Revelation 19 can be considered the climax of the entire Bible. The Messiah is coming, but no longer as a suffering servant. This time He comes as a conquering King, to judge evil and establish His kingdom on earth.