2 Timothy 4:15

You also should beware of him; for he has violently opposed our preaching.

Matthew 10:16-17

"Remember it is I who am sending you out, as sheep into the midst of wolves; prove yourselves as sagacious as serpents, and as innocent as doves.

Philippians 3:2

Beware of 'the dogs,' the bad workmen, the self-mutilators.

2 Timothy 3:8

And just as Jannes and Jambres withstood Moses, so also these false teachers withstand the truth--being, as they are, men of debased intellects, and of no real worth so far as faith is concerned.

Treasury of Scripture Knowledge

Summary

Of whom be thou ware also; for he hath greatly withstood our words.

Bible References

Be

Matthew 10:16
"Remember it is I who am sending you out, as sheep into the midst of wolves; prove yourselves as sagacious as serpents, and as innocent as doves.
Philippians 3:2
Beware of 'the dogs,' the bad workmen, the self-mutilators.