Exodus 21:13 in the World English Bible
but not if it is unintentional, but God allows it to happen; then I will appoint you a place where he shall flee.
Context
12 He that smiteth a man, so that he die, shall be surely put to death.
13 And if a man lie not in wait, but God deliver him into his hand; then I will appoint thee a place whither he shall flee.
14 But if a man come presumptuously upon his neighbour, to slay him with guile; thou shalt take him from mine altar, that he may die.