'False Prophets' in the Bible

“Beware of the false prophets, [teachers] who come to you dressed as sheep [appearing gentle and innocent], but inwardly are ravenous wolves.

Many false prophets will appear and mislead many.

For false Christs and false prophets will appear and they will provide great signs and wonders, so as to deceive, if possible, even the elect (God’s chosen ones).

for false Christs and false prophets will arise, and they will provide signs and wonders in order to deceive, if [such a thing were] possible, even the elect [those God has chosen for Himself].

Woe to you when all the people speak well of you and praise you, for their fathers used to treat the false prophets in the same way.

But [in those days] false prophets arose among the people, just as there will be false teachers among you, who will subtly introduce destructive heresies, even denying the Master who bought them, bringing swift destruction on themselves.

Beloved, do not believe every spirit [speaking through a self-proclaimed prophet]; instead test the spirits to see whether they are from God, because many false prophets and teachers have gone out into the world.