Matthew 24:27

And the living creatures ran to and fro with the appearance of lightning.

“For the Son of Man is going to come in the glory of His Father with His angels, and will then repay each one according to his deeds.

“Truly I say to you, there are some of those who are standing here who will not taste death until they see the Son of Man coming in His kingdom.”

Now as He was sitting on the Mount of Olives, the disciples came to Him privately, saying, “Tell us, when will these things happen, and what will be the sign of Your coming and of the end of the age?”

“For this reason you also must be ready; for the Son of Man is coming at an hour when you do not think He will.

“For just like the lightning, when it flashes out of one part of the sky, shines to the other part of the sky, so will the Son of Man be in His day.