Deuteronomy 10:8-10

New Revised Standard Version Catholic Edition

⁸ At that time the Lord set apart the tribe of Levi to carry the ark of the covenant of the Lord, to stand before the Lord to minister to him, and to bless in his name, to this day. ⁹ Therefore Levi has no allotment or inheritance with his kindred; the Lord is his inheritance, as the Lord your God promised him.)

¹⁰ I stayed on the mountain forty days and forty nights, as I had done the first time. And once again the Lord listened to me. The Lord was unwilling to destroy you.