Deuteronomy 19:12

Then let the elders of his city send and fetch him thence and deliver him into the hands of the justice of blood, and he shall die.

1 Kings 2:5-6

Moreover thou knowest how Joab the son of Zeruiah hath served me, and what he hath done to the two captains of the hosts of Israel - unto Abner the son of Ner, and unto Amasa the son of Jether - how he slew them and shed the blood of war in time of peace, and put the blood of war upon his girdle that was about his loins and in his shoes that were on his feet.

1 Kings 2:28-34

Then tidings came to Joab - for Joab had turned after Adonijah, but not after Absalom - whereupon he fled unto the tabernacle of the LORD and caught handfast on the horns of the altar.

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