1 John 3:15
Anyone who keeps on hating his brother is a murderer; and you know that no murderer can have eternal life remaining in him.
Matthew 18:15
"Again, if your brother wrongs you, go and while alone with him show him the wrong. If he listens to you, you have won back your brother.
Ephesians 4:26
If you do get angry, you must stop sinning in your anger. Do not ever let the sun go down on your anger;
Ephesians 4:31
You must remove all bitterness, rage, anger, loud threats, and insults, with all malice.
1 John 2:9
Whoever claims to be in the light, and yet continues to hate his brother is still in darkness.
1 John 2:11
But whoever continues to hate his brother is in darkness and is living in darkness, and he does not know where he is going, because the darkness has blinded his eyes.