Numbers:35:20-21
nkjv@Numbers:35:20 @ If he pushes him out of hatred or, while lying in wait, hurls something at him so that he dies,
nkjv@Numbers:35:21 @ or in enmity he strikes him with his hand so that he dies, the one who struck him shall surely be put to death. He is a murderer. The avenger of blood shall put the murderer to death when he meets him.