Matthew 7:15
"Beware of false prophets, who come to you in sheep's clothing, but inwardly they are ravenous wolves.
Matthew 24:11
And many false prophets will rise up and deceive many.
Matthew 24:24
For false christs and false prophets will arise and show great signs and wonders to deceive, if possible, even the elect.
Mark 13:22
For false christs and false prophets will rise and show signs and wonders to deceive, if possible, even the elect.
Luke 6:26
Woe to you when all men speak well of you, for so did their fathers to the false prophets.
2 Thessalonians 2:9
The coming of the lawless one by the activity of Satan will be with all power and with pretended signs and wonders,
2 Peter 2:1
But false prophets also arose among the people, just as there will also be false teachers among you, who will secretly introduce destructive heresies, even denying the Master who bought them, bringing swift destruction upon themselves.
1 John 4:1
Beloved, do not believe every spirit, but test the spirits to see whether they are of God; because many false prophets have gone out into the world.