"Whoever strikes a person so that he dies must be put to death.
References for Exodus 21:12
But if he didn't intend any harm, and yet God caused it to happen by his hand, I will appoint a place for you where he may flee.
References for Exodus 21:13
If a person willfully acts against his neighbor to murder him by scheming, you must take him from My altar to be put to death.
References for Exodus 21:14
"Whoever strikes his father or his mother must be put to death.
"Whoever kidnaps a person must be put to death, whether he sells him or the person is found in his possession.
"Whoever curses his father or his mother must be put to death.