2 Samuel 3:30
"So Joab and Abishai his brother slew Abner, because he had slain their brother Asahel at Gibeon in the battle."
Cross References (ranked by relevance)
Acts 28:4
And when the barbarians saw the venomous beast hang on his hand, they said among themselves, No doubt this man is a murderer, whom, though he hath escaped the sea, yet vengeance suffereth not to live.
Proverbs 28:17
A man that doeth violence to the blood of any person shall flee to the pit; let no man stay him.