Deuteronomy 19:12

then the elders of his city shall send and fetch him thence, and deliver him into the hand of the avenger of blood, that he may die.

1 Kings 2:5-6

And thou knowest also what Joab the son of Zeruiah did to me, what he did to the two captains of the hosts of Israel, to Abner the son of Ner, and to Amasa the son of Jether, whom he slew, and shed the blood of war in peace, and put the blood of war upon his girdle that was about his loins, and upon his sandals that were on his feet.

1 Kings 2:28-34

And the report came to Joab (for Joab had turned after Adonijah, though he had not turned after Absalom); and Joab fled to the tent of Jehovah, and caught hold of the horns of the altar.

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