Mark 13:6
For many will come in my name saying, I am Christ, and will deceive many.
Mark 13:22
For false Christs and false prophets shall rise, and shall shew signs and wonders, to seduce, if it were possible, even the elect.
Matthew 24:5
For many shall come in my name, saying, I am the Christ, and shall deceive many.
Matthew 24:11
And many false prophets shall rise and shall deceive many.
Matthew 24:23-24
Then if any say to you, Lo here is Christ, or there; believe it not.
John 5:43
if another shall come in his own name, him ye will receive.
John 8:24
Therefore I said, Ye shall die in your sins; for if ye believe not, that I am, ye shall die in your sins.
Acts 5:36-39
For before these days rose up Theudas, boasting himself to be somebody, to whom was joined a number of men, about four hundred, who was slain, and all who hearkened to him were scattered and came to nothing.
1 John 4:1
Beloved, believe not every spirit, but try the spirits, whether they are of God, because many false prophets are gone out into the world.