Deuteronomy 4:39-41 New Revised Standard Version Catholic Edition (NRSVCE)
39 So acknowledge today and take to heart that the Lord is God in heaven above and on the earth beneath; there is no other. 40 Keep his statutes and his commandments, which I am commanding you today for your own well-being and that of your descendants after you, so that you may long remain in the land that the Lord your God is giving you for all time.
Cities of Refuge East of the Jordan
41 Then Moses set apart on the east side of the Jordan three cities