Numbers 35:16-22

16But if he smote him with an instrument of iron, so that he died, he is a murderer: the murderer shall surely be put to death. 17And if he smote him with a stone in the hand, whereby a man may die, and he died, he is a murderer: the murderer shall surely be put to death. 18Or if he smote him with a weapon of wood in the hand, whereby 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 meeteth him, he shall put him to death. 20And if he thrust him of hatred, or hurled at him, lying in wait, so that he died, 21or in enmity smote him with his hand, so that he died; he that smote him shall surely be put to death; he is a murderer: the avenger of blood shall put the murderer to death, when he meeteth him.

22But if he thrust him suddenly without enmity, or hurled upon him anything without lying in wait,