Luke 21:8

21:8 He said, “Watch out that you are not misled. For many will come in my name, saying, ‘I am he,’ and, ‘The time is near.’ Do not follow them!

Matthew 24:23-28

24:23 Then if anyone says to you, ‘Look, here is the Christ!’ or ‘There he is!’ do not believe him. 24:24 For false messiahs and false prophets will appear and perform great signs and wonders to deceive, if possible, even the elect. 24:25 Remember, I have told you ahead of time. 24:26 So then, if someone says to you, ‘Look, he is in the wilderness,’ do not go out, or ‘Look, he is in the inner rooms,’ do not believe him. 24:27 For just like the lightning comes from the east and flashes to the west, so the coming of the Son of Man will be. 24:28 Wherever the corpse is, there the vultures will gather.

Mark 13:21

13:21 Then if anyone says to you, ‘Look, here is the Christ!’ or ‘Look, there he is!’ do not believe him.