"Take the Levites in place of all the firstborn of Israel, and the livestock of the Levites in place of their livestock. The Levites belong to Me; I am the LORD.

Exodus 34:20
You must redeem the firstborn of a donkey with a lamb; but if you do not redeem it, you are to break its neck. You must redeem all the firstborn of your sons. No one shall appear before Me empty-handed.

Numbers 3:12
"Behold, I have taken the Levites from among the children of Israel in place of every firstborn Israelite from the womb. The Levites belong to Me,

Numbers 3:41
You are to take the Levites for Me--I am the LORD--in place of all the firstborn of Israel, and the livestock of the Levites in place of all the firstborn of the livestock of the Israelites."

Numbers 3:44
Again the LORD spoke to Moses, saying,

Numbers 8:16
For the Levites have been wholly given to Me from among the sons of Israel. I have taken them for Myself in place of all who come first from the womb, the firstborn of all the sons of Israel.

Numbers 18:6
Behold, I Myself have selected your fellow Levites from the Israelites as a gift to you, dedicated to the LORD to perform the service for the Tent of Meeting.

Malachi 2:4
Then you will know that I have sent you this commandment so that My covenant with Levi may continue," says the LORD of Hosts.

Take the Levites instead of all the firstborn among the children of Israel, and the cattle of the Levites instead of their cattle; and the Levites shall be mine: I am the LORD.