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.
2 Timothy 3:8
Just as Jannes and Jambres opposed Moses, so these men also oppose the truth, men of depraved mind, rejected in regard to the faith.
2 Timothy 4:14-15
Alexander the coppersmith did me great harm; the Lord will repay him for his deeds.
1 John 5:16
If anyone sees his brother commit a sin that does not lead to death, he will ask, and God will give him life for those whose sin is not leading to death. There is sin leading to death. I do not say that he should pray about that.
Revelation 19:20
And the beast was captured, and with him the false prophet who had performed the signs in his presence, by which he deceived those who had received the mark of the beast and those who worshipped his image. These two were thrown alive into the lake of fire which burns with sulfur.