Numbers 1:3-5

Amplified Bible, Classic Edition

³ From twenty years old and upward, all in Israel who are able to go forth to war you and Aaron shall number, company by company.

⁴ And with you there shall be a man [to assist you] from each tribe, each being the head of his father’s house.

⁵ And these are the names of the men who shall attend you: Of Reuben, Elizur son of Shedeur;