Numbers 35:19-32 - Laws About Murder And Accidental Killing
19 The kinsman avenger of blood shall slay the murderer; when he meets him, he shall slay him. 20 But if he thrusts him out of hatred or hurls at him by laying in wait, so that he dies 21 or out of enmity smites him with his hand so that he dies, he that smote him shall surely be put to death; for he is a murderer; the kinsman avenger of blood shall slay the murderer when he meets him.
22 But if he thrusts him suddenly without enmity, or has cast upon him any thing without laying in wait, 23 or with any stone, with which a man may die, seeing him not and casts it upon him that he dies, and was not his enemy, neither sought his harm, 24 then the congregation shall judge between the slayer and the kinsman avenger of blood according to these laws. 25 And the congregation shall deliver the manslayer out of the hand of the kinsman avenger of blood, and the congregation shall restore him to the city of his refuge, where he has fled, and he shall abide in it unto the death of the high priest, who was anointed with the holy oil.
26 But if the manslayer shall at any time come outside the border of the city of his refuge where he has fled, 27 and the kinsman avenger of blood finds him outside the borders of the city of his refuge, and the kinsman avenger of blood slays the manslayer, he shall not be guilty of his blood. 28 He should have remained in the city of his refuge until the death of the high priest, but after the death of the high priest the manslayer shall return into the land of his possession. 29 So these things shall be for a statute of rights unto you throughout your ages in all your dwellings.
30 Whoever kills any person, the murderer shall be put to death by the mouth of witnesses, but one witness shall not testify against any person to cause him to die. 31 Moreover ye shall take no ransom for the life of a murderer who is guilty of death, but he shall be surely put to death. 32 And ye shall take no ransom for him that is fled to the city of his refuge, that he should come again to dwell in the land, until the death of the priest.