Numbers 1:16-18

¹⁶These are the most noble princes of the multitude by their tribes and kindreds, and the chiefs of the army of Israel:

¹⁷Whom Moses and Aaron took with all the multitude of the common people:

¹⁸And assembled them on the first day of the second month, reckoning them up by the kindreds, and houses, and families, and heads, and names of every one from twenty years old and upward,