Matthew 7:15
But beware of false prophets, who come to you in sheep's clothing, but within are ravenous wolves.
Matthew 24:11
and many false prophets will arise, and deceive many;
Matthew 24:24
For false Christs and false prophets will arise, and will show great signs and wonders, so as to deceive, if possible, even the elect.
2 Timothy 3:8
Now as Jannes and Jambres withstood Moses, so these also will withstand the truth; men corrupt in mind, rejected as it respects the faith.
2 Timothy 4:14-15
Alexander the coppersmith did me much evil: the Lord repay him according to his works.
1 John 5:16
If any one see his brother sinning a sin not to death, he shall ask, and he will give him life for those who sin not to death. There is a sin to death: I do not say concerning this, that he should ask.
Revelation 19:20
And the beast was taken, and the false prophet that was with him, who did signs in his presence, with which he deceived those who received the mark of the beast, and those who worshiped his image. These two were thrown alive into the lake of fire, which burns with brim stone.