Numbers 26:3-7

So Moses and Eleazar the priest spoke with them in the plains of Moab by the Jordan at Jericho, saying,

“Take a census of the people from twenty years old and upward, as the Lord has commanded Moses.” Now the sons of Israel who came out of the land of Egypt were as follows:

Reuben, Israel’s firstborn, the sons of Reuben: of Hanoch, the family of the Hanochites; of Pallu, the family of the Palluites;

of Hezron, the family of the Hezronites; of Carmi, the family of the Carmites.

These are the families of the Reubenites, and those who were counted of them were 43,730.