Deuteronomy 19:12 in the King James Version
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.
Context
11 But if any man hates his neighbor, lies in wait for him, rises up against him, strikes him mortally so that he dies, and he flees into one of these cities;
12 then the elders of his city shall send and bring him there, and deliver him into the hand of the avenger of blood, that he may die.
13 Your eye shall not pity him, but you shall purge the innocent blood from Israel that it may go well with you.