Mark 13:6
For many will come in my name, saying, I am He; and will deceive many. I
Mark 13:22
For false Christs and false prophets will arise, and give signs and wonders, to deceive even the elect, if possible.
Matthew 24:5
For many will come in my name, saying, I am Christ; and they will deceive many.
Matthew 24:11
And many false prophets will arise and deceive many.
Matthew 24:23-24
Then if any one may say to you, Lo, here is Christ, or, there: believe him not:
John 5:43
I have come in the name of my Father, and you do not receive me: if another may come in his own name, you will receive him.
John 8:24
Therefore I said to you, that you shall die in your sins: for if you may not believe that I am He, you shall die in your sins.
Acts 5:36-39
For before these days Theudas arose, saying that he was somebody, to whom a number of men, about four hundred, adhered, who were slain, and all, so many as confided in him, were dispersed, and came to nothing.
1 John 4:1
Beloved, believe not every spirit, but prove the spirits if they are of God: because many false prophets have gone out into the world.