Gregory the Great
Catena Aurea · Matthäusevangelium 24
Then if any man shall say unto you, Lo, here is Christ, or there; believe it not. 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. Behold, I have told you before. Wherefore if they shall say unto you, Behold, he is in the desert; go not forth: behold, he is in the secret chambers; believe it not. For as the lightning cometh out of the east, and shineth even unto the west; so shall also the coming of the Son of man be. For wheresoever the carcase is, there will the eagles be gathered together.
(Mor. xv. 61.) When then Antichrist shall have wrought wonderful prodigies before the eyes of the carnal, he shall draw men after him, all such as delight in present goods, surrendering themselves irrevocably to his sway, Insomuch that if it were possible the very elect should be led astray.