Numbers 35:21

¹⁹  The revenger of blood himself shall slay the murderer: when he meeteth him, he shall slay him.

²⁰  But if he thrust him of hatred, or hurl at him by laying of wait, that he die;

²¹  Or in enmity smite him with his hand, that he die: he that smote him shall surely be put to death; for he is a murderer: the revenger of blood shall slay the murderer, when he meeteth him.

²²  But if he thrust him suddenly without enmity, or have cast upon him any thing without laying of wait,

²³  Or with any stone, wherewith a man may die, seeing him not, and cast it upon him, that he die, and was not his enemy, neither sought his harm: