Matthew 24:21-24

For there will be greater anguish than at any time since the world began. And it will never be so great again. In fact, unless that time of calamity is shortened, not a single person will survive. But it will be shortened for the sake of God’s chosen ones. “Then if anyone tells you, ‘Look, here is the Messiah,’ or ‘There he is,’ don’t believe it. For false messiahs and false prophets will rise up and perform great signs and wonders so as to deceive, if possible, even God’s chosen ones.