Numbers 3:41-43

Young's Literal Translation

⁴¹ and thou hast taken the Levites for Me (I [am] Jehovah), instead of every first-born among the sons of Israel, and the cattle of the Levites instead of every firstling among the cattle of the sons of Israel.'

⁴² And Moses numbereth, as Jehovah hath commanded him, all the first-born among the sons of Israel.

⁴³ And all the first-born -- male -- by the number of names, from a son of a month and upward, of their numbered ones, are two and twenty thousand two hundred and seventy and three.