Mark 13:6
Many will come in My name, saying, 'I am He', and will lead many astray.
Mark 13:22
for there will arise false Christs and false prophets, and will show signs and wonders, in order to lead astray, if possible, the elect.
Matthew 24:5
for many will come in My name, saying, 'I am the Christ,' and will lead many astray.
Matthew 24:11
and many false prophets will arise, and will lead many astray;
Matthew 24:23-24
Then, if any one shall say to you, 'Behold, here is the Christ!' or 'Here,' believe it not;
John 5:43
I have come in My Father's name, and ye receive Me not; if another shall come in his own name, him ye will receive.
John 8:24
I said, therefore, to you, that ye will die in your sins; for, unless ye believe that I am He, ye will die in your sins."
Acts 5:36-39
for before these days arose Theudas, alleging that he himself was somebody, to whom a number of men, about four hundred, joined themselves; who was slain, and all, as many as obeyed him, were disbanded, 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 have gone forth into the world.