Numbers 1:20-22

New Century Version

²⁰ The tribe of Reuben, the first son born to Israel, was counted; all the men twenty years old or older who were able to serve in the army were listed by name with their families and family groups. ²¹ The tribe of Reuben totaled 46,500 men.

²² The tribe of Simeon was counted; all the men twenty years old or older who were able to serve in the army were listed by name with their families and family groups.