Proverbs 22:24-25 (NIV)
24Do not make friends with a hot-tempered man, do not associate with one easily angered,
25or you may learn his ways and get yourself ensnared.
Proverbs 22:24-25 (ESV)
Make no friendship with a man given to anger, nor go with a wrathful man, lest you learn his ways and entangle yourself in a snare.
Ephesians 4:31-32 (NIV)
31Get rid of all bitterness, rage and anger, brawling and slander, along with every form of malice.
32Be kind and compassionate to one another, forgiving each other, just as in Christ God forgave you.