Numbers 26:3-5

American Standard Version

³ And Moses and Eleazar the priest spake with them in the plains of Moab by the Jordan at Jericho, saying, ⁴ Take the sum of the people, from twenty years old and upward; as Jehovah commanded Moses and the children of Israel, that came forth out of the land of Egypt.

⁵ Reuben, the first-born of Israel; the sons of Reuben: of Hanoch, the family of the Hanochites; of Pallu, the family of the Palluites;