2 Timothy 4:15
beware of him, for he violently opposed our doctrine.
Matthew 10:16-17
By your mission you will be expos'd like sheep in the midst of wolves: be then as circumspect as serpents, and as inoffensive as doves:
Philippians 3:2
be upon your guard against snarlers, against the contrivances of the crafty, against the spurious breed;
2 Timothy 3:8
Moses did not meet with greater opposition from Jannes and Jambres, than truth does from men so corrupted in their mind, and so adulterated in their faith.
Treasury of Scripture Knowledge
Summary
Of whom be thou ware also; for he hath greatly withstood our words.
Bible References
Be
Matthew 10:16
By your mission you will be expos'd like sheep in the midst of wolves: be then as circumspect as serpents, and as inoffensive as doves:
Philippians 3:2
be upon your guard against snarlers, against the contrivances of the crafty, against the spurious breed;