1 John 3:15
Every one who hates his Brother is a murderer; and you know that no murderer has Immortal Life within him.
Matthew 18:15
If your Brother does wrong, go to him and convince him of his fault when you and he are alone. If he listens to you, you have won your Brother.
Ephesians 4:26
'Be angry, yet do not sin.' Do not let the sun go down upon your anger;
Ephesians 4:31
Let all bitterness, passion, anger, brawling, and abusive language be banished from among you, as well as all malice.
1 John 2:9
He who says that he is in the Light, and yet hates his Brother, is in the Darkness even now.
1 John 2:11
while he who hates his Brother is in the Darkness, and is living in the Darkness, and does not know where he is going, because the Darkness prevents his seeing.