Numbers 35:22
But if he shall thrust him suddenly without enmity, or shall have cast upon him any thing without laying in wait,
Exodus 21:13
And if a man shall not lie in wait, but God shall deliver him into his hand; then I will appoint thee a place whither he shall flee.
Numbers 35:11
Then ye shall appoint for you cities to be cities of refuge for you; that the slayer may flee thither, who killeth any person at unawares.
Deuteronomy 19:5
As when a man goeth into the wood with his neighbor to hew wood, and his hand maketh a stroke with the ax to cut down the tree, and the head slippeth from the helve, and falleth upon his neighbor, that he dieth: he shall flee to one of these cities, and live:
Joshua 20:3
That the slayer that killeth any person unawares and ignorantly, may flee thither: and they shall be your refuge from the avenger of blood.
Joshua 20:5
And if the avenger of blood shall pursue him, then they shall not deliver the slayer into his hand; because he smote his neighbor ignorantly, and had not hated him before.