Matthew 7:15
But beware of false prophets, who come to you in sheep's clothing, but inwardly they are rapacious wolves.
2 Timothy 4:3
For the time will come when they will not endure healthy teaching; but according to their own lusts they will heap to themselves teachers itching as to their hearing;
2 Peter 2:1-3
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.
Revelation 19:20
And the beast, and the false prophet along with him, who wrought miracles in his presence, by which he deceived those having received the mark of the beast, and those worshiping his image; and the two were cast alive into the lake of fire which burns with brimstone.