Matthew 7:15
Beware of the false prophets, who come to you in sheeps clothing, but inwardly are ravening wolves.
2 Corinthians 11:13
For such are false apostles, deceitful workmen, transforming themselves into apostles of Christ.
2 Peter 2:1-3
But there arose false prophets also among the people, as there will be false teachers among you also, who will stealthily bring in destructive factions, even denying the Lord that bought them; bringing upon themselves swift destruction.
1 John 4:1
Beloved, believe not every spirit, but try the spirits, whether they are of God; because many false prophets have gone forth into the world.
Revelation 19:20
And the beast was seized and he who was with him, the false prophet who wrought the signs in his presence, with which he deceived those who received the mark of the beast, and who worshipped his image; the two were cast alive into the lake of fire burning with brimstone.