Matthew 24:26

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. Matthew 24:26

Here Jesus begins to tell the 'how' of His second coming. He teaches that a lot of religious motions and practices would be made by the deceiver who having studied man, knows man pays a lot of heed to activities, religious activities. He prepares the body not to be carried away with such moves.