Numbers 3:12, 15, 45

“I have taken the Levites from among the Israelites in place of the first male offspring of every Israelite woman. The Levites are mine

“Count the Levites by their families and clans. Count every male a month old or more.”

“Take the Levites in place of all the firstborn of Israel, and the livestock of the Levites in place of their livestock. The Levites are to be mine. I am the LORD.