Numbers 3:45 in the King James Version
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.
Context
44 The LORD spoke to Moses, saying,
45 “Take the Levites instead of all the firstborn among the children of Israel, and the livestock of the Levites instead of their livestock; and the Levites shall be mine. I am the LORD.
46 For the redemption of the two hundred seventy-three of the firstborn of the children of Israel who exceed the number of the Levites,