4 And with you there shall be a man of every tribe; every one head of his fathers' house. 5 And these are the names of the men that shall stand with you. Of Reuben: Elizur the son of Shedeur. 6 Of Simeon: Shelumiel the son of Zurishaddai. 7 Of Judah: Nahshon the son of Amminadab.
Matthew Henry's Commentary on Numbers 1:4-7
Commentary on Numbers 1:1-43
(Read Numbers 1:1-43)
The people were numbered to show God's faithfulness in thus increasing the seed of Jacob, that they might be the better trained for the wars and conquest of Canaan, and to ascertain their families in order to the division of the land. It is said of each tribe, that those were numbered who were able to go forth to war; they had wars before them, though now they met with no opposition. Let the believer be prepared to withstand the enemies of his soul, though all may appear to be peace.