Numbers 35:19-21

19 aThe avenger of blood shall himself put the murderer to death; when he meets him, he shall put him to death. 20And if he pushed him out of hatred or hurled something at him, blying in wait, so that he died, 21or in enmity struck him down with his hand, so that he died, then he who struck the blow shall be put to death. He is a murderer. cThe avenger of blood shall put the murderer to death when he meets him.

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