Matthew 7:15-17
Take heed then of false prophets, who come to you in the garb of sheep, but inwardly they are ravening wolves.
John 3:19-21
Now this is the condemnation, that the light is come into the world, and men loved the darkness rather than the light, because their deeds were evil.
2 Corinthians 11:13-15
For such are fake apostles, deceitful labourers, transforming themselves into apostles of Christ.
2 Thessalonians 2:9-11
whose appearing is known by fanatical energy, displayed in all power, and signs, and lying miracles,
2 Timothy 4:3-4
For the time will come when they will not endure sound doctrine; but after their own inclinations will set up a herd of teachers for themselves, having the itch of hearing;
2 Peter 2:1-2
BUT there were false prophets among the people, as there will be false teachers also among you, who wickedly introduce damnable heresies, and deny the sovereign Lord who bought them, bringing on themselves swift destruction.