Joshua 20:5
Now if the closely related avenger pursues him, then they are not to hand the killer over to him, because he killed his neighbor without premeditation and without hating him beforehand.
Numbers 35:12
They are to serve as cities of refuge from a blood avenger in order to keep the inadvertent killer from dying until he has stood trial in the presence of the community.
Numbers 35:25
The community is to release the inadvertent killer from the blood avenger and return him to the town of refuge where he had fled. He is to live there until the High Priest dies, who will have anointed him with holy oil.
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