Proverbs 14:29

14:29 The one who is slow to anger has great understanding,

but the one who has a quick temper exalts folly.

Proverbs 15:18

15:18 A quick-tempered person stirs up dissension,

but one who is slow to anger calms a quarrel.

Proverbs 19:11

19:11 A person’s wisdom makes him slow to anger,

and it is his glory to overlook an offense.