Matthew 7:15
But beware of false prophets, who come to you in sheep's clothing, but inwardly they are rapacious wolves.
Matthew 24:11
And many false prophets will arise and deceive many.
Matthew 24:24
for false Christs and false prophets will rise up, and give great signs and wonders; so as to deceive even the elect, if possible.
Mark 13:22
For false Christs and false prophets will arise, and give signs and wonders, to deceive even the elect, if possible.
Luke 6:26
Woe unto you when all the people may speak well of you! because according to the same things their fathers were accustomed to do to the false prophets.
2 Thessalonians 2:9
whose coming is according to the energy of Satan in all power and signs and wonders of falsehood,
2 Peter 2:1
However there were indeed false prophets among the people, as there will also be false teachers among you, whosoever shall bring in destructive heresies, even denying the Lord who bought them, bringing on themselves swift destruction.
1 John 4:1
Beloved, believe not every spirit, but prove the spirits if they are of God: because many false prophets have gone out into the world.