'Avenger of Blood' in the Bible

and if the avenger of blood finds him outside the borders of the city of his refuge, and if the avenger of blood kills the slayer, he shall not be guilty of blood,

then the elders of his city shall send and bring him away from there and deliver him into the hand of the avenger of blood so that he may die.

that the manslayer who in innocence strikes anyone mortally, without knowing, may flee there. And they shall be your refuge from the avenger of blood.

And if the avenger of blood pursues him, then they shall not deliver the manslayer into his hand, for he has struck his neighbor without knowing, and did not hate him in past time.

These were the appointed cities for all the sons of Israel, and for the alien who was living in their midst, that he who had killed anyone without knowing might flee there, and not die by the hand of the avenger of blood, until he stood before the congregation.