Numbers 1:19-21

New King James Version

¹⁹ As the Lord commanded Moses, so he numbered them in the Wilderness of Sinai.

²⁰ Now the ^(A)children of Reuben, Israel’s oldest son, their genealogies by their families, by their fathers’ house, according to the number of names, every male individually, from twenty years old and above, all who were able to go to war: ²¹ those who were numbered of the tribe of Reuben were forty-six thousand five hundred.