Numbers 35:20

18Or if he struck him with a weapon of wood in the hand, by which a man may die, and he died, he is a murderer. The murderer shall surely be put to death.

19The avenger of blood shall himself put the murderer to death. When he meets him, he shall put him to death.

20If he shoved him out of hatred, or hurled something at him while lying in wait, so that he died,

21or in hostility struck him with his hand, so that he died, he who struck him shall surely be put to death. He is a murderer. The avenger of blood shall put the murderer to death when he meets him.

22“‘But if he shoved him suddenly without hostility, or hurled on him anything without lying in wait,