Numbers 1:20-25   20. And the children of Reuben, Israel's eldest son, by their generations, after their families, by the house of their fathers, according to the number of the names, by their polls, every male from twenty years old and upward, all that were able to go forth to war; 21. Those that were numbered of them, even of the tribe of Reuben, were forty and six thousand and five hundred. 22. ¶Of the children of Simeon, by their generations, after their families, by the house of their fathers, those that were numbered of them, according to the number of the names, by their polls, every male from twenty years old and upward, all that were able to go forth to war; 23. Those that were numbered of them, even of the tribe of Simeon, were fifty and nine thousand and three hundred. 24. ¶Of the children of Gad, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war; 25. Those that were numbered of them, even of the tribe of Gad, were forty and five thousand six hundred and fifty.

Numbers 10:18-20   18. ¶And the standard of the camp of Reuben set forward according to their armies: and over his host was Elizur the son of Shedeur. 19. And over the host of the tribe of the children of Simeon was Shelumiel the son of Zurishaddai. 20. And over the host of the tribe of the children of Gad was Eliasaph the son of Deuel.

Numbers 26:5-7   5. ¶Reuben, the eldest son of Israel: the children of Reuben; Hanoch, of whom cometh the family of the Hanochites: of Pallu, the family of the Palluites: 6. Of Hezron, the family of the Hezronites: of Carmi, the family of the Carmites. 7. These are the families of the Reubenites: and they that were numbered of them were forty and three thousand and seven hundred and thirty.