Matthew 7:15-17
"Beware of false prophets, who come to you in sheep's clothing, but inwardly they are ravenous wolves.
John 3:19-21
And this is the judgment, that the light has come into the world, and men loved darkness rather than light, because their deeds were evil.
2 Corinthians 11:13-15
For such men are false apostles, deceitful workmen, disguising themselves as apostles of Christ.
2 Thessalonians 2:9-11
The coming of the lawless one by the activity of Satan will be with all power and with pretended signs and wonders,
2 Timothy 4:3-4
For the time will come when they will not endure sound doctrine; but having itching ears, they will accumulate for themselves teachers to suit their own desires,
2 Peter 2:1-2
But false prophets also arose among the people, just as there will also be false teachers among you, who will secretly introduce destructive heresies, even denying the Master who bought them, bringing swift destruction upon themselves.