Numbers 35:17

¹⁵It shall be a place of refuge for the children of Israel, and for the stranger, and for him that sojourns among you; these cities shall be for a place of refuge, for every one to flee thither who has killed a man unintentionally.

¹⁶And if he should smite him with an iron instrument, and the man should die, he is a murderer; let the murderer by all means be put to death.

— Numbers 35:17 —

¹⁸And if he should smite him with an instrument of wood from his hand, whereby he may die, and he thus die, he is a murderer; let the murderer by all means be put to death.

¹⁹The avenger of blood himself shall slay the murderer: whensoever he shall meet him he shall slay him.