Mark 13:6
Many will come in my name, saying, 'I am [he],' and they will deceive many.
Mark 13:22
For false messiahs and false prophets will appear, and will produce signs and wonders in order to mislead, if possible, the elect.
Jeremiah 14:14
And Yahweh said to me, "The prophets [are] prophesying lies in my name. I have not sent them, and I have not commanded them, and I have not spoken to them. They are prophesying to you a lying vision, and a divination, worthless, and the deceitfulness of their {minds}."
Jeremiah 23:21-25
I have not sent the prophets, yet they ran. I have not spoken to them, yet they prophesied
Matthew 24:5
For many will come in my name, saying, 'I am the Christ,' and they will deceive many.
Matthew 24:11
and many false prophets will appear and will deceive many,
Matthew 24:23-24
"At that time if anyone should say to you, 'Behold, here [is] the Christ,' or 'Here [he is],' do not believe [him]!
John 5:43
I have come in my Father's name, and you do not accept me. If another should come in his own name, you would accept that one!
John 8:24
Thus I said to you that you will die in your sins. For if you do not believe that I am [he], you will die in your sins."
Acts 5:36-39
For before these days, Theudas rose up saying he was somebody. A number of men, about four hundred, joined {him}. {He} was executed, and all who followed him were dispersed and came to nothing.
1 John 4:1
Dear friends, do not believe every spirit, but test the spirits [to determine] if they are from God, because many false prophets have gone out into the world.