Numbers 3:39-41

Amplified Bible, Classic Edition

³⁹ All the Levites whom Moses and Aaron numbered at the command of the Lord, by their families, all the males from a month old and upward, were 22,000.

⁴⁰ And the Lord said to Moses, Number all the firstborn of the males of the Israelites from a month old and upward, and take the number of their names.

⁴¹ You shall take the Levites for Me instead of all the firstborn among the Israelites. I am the Lord; and you shall take the cattle of the Levites for Me instead of all the firstlings among the cattle of the Israelites.