Numbers 35:11-21

11 then you shall appoint you cities to be cities of refuge for you, that the manslayer who kills any person unwittingly may flee there.
12 The cities shall be to you for refuge from the avenger, that the manslayer not die, until he stands before the congregation for judgment.
13 The cities which you shall give shall be for you six cities of refuge.
14 You shall give three cities beyond the Jordan, and three cities shall you give in the land of Canaan; they shall be cities of refuge.
15 For the children of Israel, and for the stranger and for the sojourner among them, shall these six cities be for refuge; that everyone who kills any person unwittingly may flee there.
16 But if he struck him with an instrument of iron, so that he died, he is a murderer: the murderer shall surely be put to death.
17 If he struck 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.
18 Or if he struck 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.
19 The avenger of blood shall himself put the murderer to death: when he meets him, he shall put him to death.
20 If he thrust him of hatred, or hurled at him, lying in wait, so that he died,
21 or in enmity 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.
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