Mark 13:6
for many shall come in my name, saying, I am [the Christ], and shall deceive many.
Mark 13:22
For false prophets shall arise, and perform miracles and wonders, to deceive, if possible, the elect.
Matthew 24:5
for many shall come in my name, saying, I am the Christ, and shall deceive many.
Matthew 24:11
and many false prophets shall be raised up and deceive many,
Matthew 24:23-24
Then if one says to you, Behold, here is the Christ, or there! believe it not.
John 5:43
I have come in my Father's name and you receive me not; if another comes in his own name, him will you receive.
John 8:24
Therefore I said to you, You shall die in your sins; for if you believe not that I am [the Christ], 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 was destroyed, and all who obeyed him passed away and came to nothing.
1 John 4:1
BELOVED, believe not every spirit, but prove the spirits whether they are of God; for many false prophets have gone out into the world.