Numbers 35:16-19 New International Version (NIV)

16. “ ‘If anyone strikes someone a fatal blow with an iron object, that person is a murderer; the murderer is to be put to death.

17. Or if anyone is holding a stone and strikes someone a fatal blow with it, that person is a murderer; the murderer is to be put to death.

18. Or if anyone is holding a wooden object and strikes someone a fatal blow with it, that person is a murderer; the murderer is to be put to death.

19. The avenger of blood shall put the murderer to death; when the avenger comes upon the murderer, the avenger shall put the murderer to death.

Numbers 35