Matthew 24:21-25

²¹ For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.

²² And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened.

²³ Then if any man shall say unto you, Lo, here is Christ, or there; believe it not.

²⁴ For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.

²⁵ Behold, I have told you before.