2 Timothy 4:15

You too must be on your guard against him, for he vehemently opposed my teaching.

Matthew 10:16-17

"Here I am sending you out like sheep among wolves. So you must be wise like serpents, and guileless like doves.

Philippians 3:2

Look out for those dogs, those mischief-makers, with their amputation!

2 Timothy 3:8

Just as Jannes and Jambres opposed Moses, these people in turn oppose the truth; they are men of depraved minds and counterfeit 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
"Here I am sending you out like sheep among wolves. So you must be wise like serpents, and guileless like doves.
Philippians 3:2
Look out for those dogs, those mischief-makers, with their amputation!