2 Corinthians 11:13-15
For such are false apostles, deceitful workmen, transforming themselves into apostles of Christ.
Galatians 2:4
and that because of the false brethren stealthily brought in, who crept in to spy out our liberty which we have in Christ Jesus, that they might bring into bondage;
2 Timothy 3:8
Now as Jannes and Jambres withstood Moses, so also do these withstand the truth; men corrupted in their minds, reprobate concerning the faith.
2 Peter 2:1-2
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.