Numbers 1:3-5

Revised Standard Version

³ from twenty years old and upward, all in Israel who are able to go forth to war, you and Aaron shall number them, company by company. ⁴ And there shall be with you a man from each tribe, each man being the head of the house of his fathers. ⁵ And these are the names of the men who shall attend you. From Reuben, Eli′zur the son of Shed′eur;