Numbers 1:2-4

2 [2-3] I want you and Aaron to find out how many people are in each of Israel’s clans and families. And make a list of all the men twenty years and older who are able to fight in battle.

4 [4-15] The following twelve family leaders, one from each tribe, will help you: Elizur son of Shedeur from Reuben, Shelumiel son of Zurishaddai from Simeon, Nahshon son of Amminadab from Judah, Nethanel son of Zuar from Issachar, Eliab son of Helon from Zebulun, Elishama son of Ammihud from Ephraim, Gamaliel son of Pedahzur from Manasseh, Abidan son of Gideoni from Benjamin, Ahiezer son of Ammishaddai from Dan, Pagiel son of Ochran from Asher, Eliasaph son of Deuel from Gad, and Ahira son of Enan from Naphtali.