Num Numbers, chapter Book of Numbers, chapter 35
And if he thrust him of hatred, or hurled at him any thing, lying in wait, so that he died; Deu 19:11or in enmity smote him with his hand, that he died; he that smote him shall surely be put to death: he is a murderer; the avenger of blood shall put the murderer to death when he meeteth him. Deu 19:12