Mark 13:6
Many will come under my name and say 'I am he,' and many will be misled by them.
Mark 13:22
For false Christs and false prophets will appear, and they will show signs and wonders to mislead God's chosen people if they can.
Matthew 24:5
For many will come under my name, and say, 'I am the Christ,' and many will be misled by them.
Matthew 24:11
Many false prophets will appear, and many will be misled by them,
Matthew 24:23-24
"If anyone says to you at that time, 'Look! here is the Christ!' or 'There he is!' do not believe it,
John 5:43
I have come in my Father's name, and you refuse to accept me. If someone else comes in his own name you will accept him.
John 8:24
That is why I said to you that you would die in the midst of your sins, for unless you believe that I am what I say, you will die in the midst of your sins."
Acts 5:36-39
For some time ago Theudas appeared, claiming to be a person of importance, and a group of men numbering some four hundred joined him. But he was killed and all his followers were dispersed and disappeared.
1 John 4:1
Dear friends, do not believe every inspired utterance, but test the utterances to see whether they come from God, for many false prophets have come out into the world.