Mark 13:23

19 For those will be days of tribulation unmatched from the beginning of God’s creation until now, and never to be seen again.

20 If the Lord had not cut short those days, nobody would be saved. But for the sake of the elect, whom He has chosen, He has cut them short.

21 At that time if anyone says to you, ‘Look, here is the Christ!’ or ‘There He is!’ do not believe it.

22 For false Christs and false prophets will appear and perform signs and wonders that would deceive even the elect, if that were possible.

23 So be on your guard; I have told you everything in advance.

24 But in those days, after that tribulation: ‘The sun will be darkened, and the moon will not give its light;

25 the stars will fall from the sky, and the powers of the heavens will be shaken.’

26 At that time they will see the Son of Man coming in the clouds with great power and glory.

27 And He will send out the angels to gather His elect from the four winds, from the ends of the earth to the ends of heaven.

Read all of Mark 13