2 Corinthians 11:13-15
For such false apostles, deceitful laborers, transform themselves into apostles of Christ.
Galatians 2:4
but on account of false brothers brought in secretly to act as spies against our liberty which we have in Christ Jesus, to bring us into servitude,
2 Timothy 3:8
As Jannes and Jambres opposed Moses, so also these oppose the truth, men of no judgment, reprobate in respect to the faith.
2 Peter 2:1-2
But there were also false prophets among the people, as there shall also be false teachers among you, who shall bring in by stealth destructive heresies, even denying the master that bought them, bringing on themselves swift destruction;