Romans 12:17-18, 21
17 Repay no one evil for evil, but give thought to do what is honorable in the sight of all.
18 If possible, so far as it depends on you, live peaceably with all.
21 Do not be overcome by evil, but overcome evil with good.
26 Be angry and do not sin; do not let the sun go down on your anger,
1 A soft answer turns away wrath, but a harsh word stirs up anger.
11 Good sense makes one slow to anger, and it is his glory to overlook an offense.