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.
2 Timothy 3:8
In the manner in which Jannes and Jambres also resisted Moses, so these indeed resist the truth; men who are corrupt as to their mind, reprobate concerning the faith.
2 Timothy 4:14-15
Alexander the coppersmith showed to me much evil: the Lord will reward him according to his works.
1 John 5:16
If any one may see his brother sinning a sin not unto death, he shall ask, and he will give him life to those sinning not unto death. There is a sin unto death; concerning this I do not say that you may ask.
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.