Matthew 7:15-17
But beware of false prophets, who come to you in sheep's clothing, but inwardly they are rapacious wolves.
John 3:19-21
And this is the condemnation, that light has come into the world, and men love darkness rather than light; for their works are evil.
2 Corinthians 11:13-15
For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.
2 Thessalonians 2:9-11
whose coming is according to the energy of Satan in all power and signs and wonders of falsehood,
2 Timothy 4:3-4
For the time will come when they will not endure healthy teaching; but according to their own lusts they will heap to themselves teachers itching as to their hearing;
2 Peter 2:1-2
However there were indeed false prophets among the people, as there will also be false teachers among you, whosoever shall bring in destructive heresies, even denying the Lord who bought them, bringing on themselves swift destruction.