Matthew 24:22-25

22“If those days had not been cut short, no one would survive, but for the sake of the elect those days will be shortened. 23At that time if anyone says to you, ‘Look, here is the Messiah!’ or, ‘There he is!’ do not believe it. 24For false messiahs and false prophets will appear and perform great signs and wonders to deceive, if possible, even the elect.

25See, I have told you ahead of time.