Matthew 10:16-17Behold, I send you forth as sheep in the midst of wolves: be ye therefore wise as serpents, and harmless as doves. But beware of men: for they will deliver you up to the councils, and they will scourge you in their synagogues;
Philippians 3:2Beware of dogs, beware of evil workers, beware of the concision.
2 Timothy 3:8Now as Jannes and Jambres withstood Moses, so do these also resist the truth: men of corrupt minds, reprobate concerning the faith.