Mark 13:6
Many will come assuming my name and saying, 'I am He;' and they will mislead many.
Mark 13:22
For there will rise up false Christs and false prophets, displaying signs and prodigies with a view to lead astray--if indeed that were possible--even God's own People.
Matthew 24:5
"for many will come assuming my name and saying 'I am the Christ;' and they will mislead many.
Matthew 24:11
Many false prophets will rise up and lead multitudes astray;
Matthew 24:23-24
"If at that time any one should say to you, 'See, here is the Christ!' or 'Here!' give no credence to it.
John 5:43
I have come as my Father's representative, and you do not receive me. If some one else comes representing only himself, him you will receive.
John 8:24
That is why I told you that you will die in your sins; for, unless you believe that I am He, that is what will happen."
Acts 5:36-39
Years ago Theudas appeared, professing to be a person of importance, and a body of men, some four hundred in number, joined him. He was killed, and all his followers were dispersed and annihilated.
1 John 4:1
Dear friends, do not believe every spirit, but put the spirits to the test to see whether they are from God; for many false teachers have gone out into the world.