Hi, the best information in the Bible for this subject is Matthew 24:3–8, 21–22, 29–30 that says:
Matthew 24:3-8, 21–22, 29–20
Easy-to-Read Version
3 Later, Jesus was sitting at a place on the Mount of Olives. The followers came to be alone with him. They said, “Tell us when these things will happen. And what will happen to prepare us for your coming and the end of time?”
4 Jesus answered, “Be careful! Don’t let anyone fool you. 5 Many people will come and use my name. They will say, ‘I am the Messiah.’ And they will fool many people. 6 You will hear about wars that are being fought. And you will hear stories about other wars beginning. But don’t be afraid. These things must happen before the end comes. 7 Nations will fight against other nations. Kingdoms will fight against other kingdoms. There will be times when there is no food for people to eat. And there will be earthquakes in different places. 8 These things are only the beginning of troubles, like the first pains of a woman giving birth.
21 because it will be a time of great trouble. There will be more trouble than has ever happened since the beginning of the world. And nothing as bad as that will ever happen again.
22 “But God has decided to make that terrible time short. If it were not made short, no one would continue living. But God will make that time short to help the people he has chosen.
29 “Right after the trouble of those days, this will happen:
‘The sun will become dark,
and the moon will not give light.
The stars will fall from the sky,
and everything in the sky will be changed.’
30 “Then there will be something in the sky that shows the Son of Man is coming. All the people of the world will cry. Everyone will see the Son of Man coming on the clouds in the sky. He will come with power and great glory.