Numbers 3:40-41 Yahweh said to Moses, "Number all the firstborn males of the children of Israel from a month old and upward, and take the number of their names.

WEB_Strongs⁽ⁱ⁾

40 H3068 Yahweh H559 said H4872 to Moses, H6485 "Number H1060 all the firstborn H2145 males H1121 of the children H3478 of Israel H2320 from a month H1121 old H4605 and upward, H5375 and take H4557 the number H8034 of their names.

41 H3947 You shall take H3881 the Levites H3068 for me (I am Yahweh) H1060 instead of all the firstborn H1121 among the children H3478 of Israel; H929 and the livestock H3881 of the Levites H1060 instead of all the firstborn H929 among the livestock H1121 of the children H3478 of Israel."