For they have been exclusively assigned to me from the Israelites. I have taken them for myself in place of all who come first from the womb, every Israelite firstborn.
“Take the Levites in place of every firstborn among the Israelites, and the Levites’ cattle in place of their cattle. The Levites belong to me; I am the Lord.
because every firstborn belongs to me. At the time I struck down every firstborn in the land of Egypt, I consecrated every firstborn in Israel to myself, both man and animal. They are mine; I am the Lord.”