'False Prophets' in the Bible

"Beware of false prophets who come to you in sheep's clothing, but inside are ravenous wolves.

and many false prophets will appear and will deceive many,

For false messiahs and false prophets will appear, and will produce great signs and wonders in order to deceive, if possible, even the elect.

For false messiahs and false prophets will appear, and will produce signs and wonders in order to mislead, if possible, the elect.

Woe whenever all people speak well of you, for their fathers used to do the same [things] to the false prophets.

But there were also false prophets among the people, as there will be false teachers among you also, who will bring in {destructive heresies}, even denying the Master who bought them, [thus] bringing on themselves swift destruction.

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.