Deuteronomy 4:42
that the manslayer might flee there, who kills his neighbor unawares, and didn't hate him in time past; and that fleeing to one of these cities he might live:
Numbers 35:6
"The cities which you shall give to the Levites, they shall be the six cities of refuge, which you shall give for the manslayer to flee to: and besides them you shall give forty-two cities.
Numbers 35:11-12
then you shall appoint you cities to be cities of refuge for you, that the manslayer who kills any person unwittingly may flee there.
Numbers 35:15-28
For the children of Israel, and for the stranger and for the foreigner living among them, shall these six cities be for refuge; that everyone who kills any person unwittingly may flee there.
Deuteronomy 19:1-10
When Yahweh your God shall cut off the nations, whose land Yahweh your God gives you, and you succeed them, and dwell in their cities, and in their houses;
Hebrews 6:18
that by two immutable things, in which it is impossible for God to lie, we may have a strong encouragement, who have fled for refuge to take hold of the hope set before us.