2 Corinthians 11:13-15
For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.
Galatians 2:4
but on account of the false brethren having crept in, who came in to spy out our liberty which we have in Christ Jesus, in order that they shall bring us into bondage:
2 Timothy 3:8
In the manner in which Jannes and Jambres also resisted Moses, so these indeed resist the truth; men who are corrupt as to their mind, reprobate concerning the faith.
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.