In Matthew 24:29-31 Jesus said:

²⁸ “Immediately after the tribulation of those days the sun will be darkened, and the moon will not give its light, and the stars will fall from heaven, and the powers of the heavens will be shaken.

³⁰ Jesus’ words, “immediately after,” do not mean right after ancient Jerusalem’s “great tribulation” in 70 C.E. On the word “immediately” Dr. A. T. Robertson says in his commentaries:

“This word, common in Mark’s Gospel as euthus, gives trouble if one stresses the time element. The problem is how much time intervenes between ‘the tribulation of those days’ and the vivid symbolisms of Mt 24 verse 29. The use of en tachei [‘shortly’] in Revelation 1:1 should make one pause before he decides. Here we have a prophetic panorama like that with foreshortened perspective. The apocalyptic picture in Mt 24 verse 29 also calls for sobriety of judgment.”a