'False Prophets' in the Bible

"Beware of false prophets, who, indeed, come to you in sheep's clothing, but within are ravening wolves.

and many false prophets will arise, and will lead many astray;

for there will arise false Christs and false prophets; and they will give great signs and wonders, so as to lead astray, if possible, even the elect.

for there will arise false Christs and false prophets, and will show signs and wonders, in order to lead astray, if possible, the elect.

"Woe to you when all men speak well of you; for in this same manner were their fathers wont to do to the false prophets.

But there arose false prophets also among the people, as among you also there will be false teachers, who, indeed, will stealthily bring in destructive heresies, denying even the Master Who bought them, bringing upon themselves swift destruction:

Beloved, believe not every spirit, but try the spirits, whether they are of God; because many false prophets have gone forth into the world.