Numbers 10:18

Then the flag of the children of Reuben went forward with their armies: and at the head of his army was Elizur, the son of Shedeur.

Numbers 2:10-16

On the south side is the flag of the children of Reuben, in the order of their armies, with Elizur, the son of Shedeur, as their chief.

Numbers 1:5

These are the names of those who are to be your helpers: from Reuben, Elizur, the son of Shedeur;

Numbers 7:35

And for the peace-offerings, two oxen, five male sheep, five he-goats, five he-lambs of the first year: this was the offering of Elizur, the son of Shedeur.

Numbers 26:5-18

Reuben, the first son of Israel: the sons of Reuben by their families: of Hanoch, the family of the Hanochites: of Pallu, the family of the Palluites:

Treasury of Scripture Knowledge

Summary

And the standard of the camp of Reuben set forward according to their armies: and over his host was Elizur the son of Shedeur.

Bible References

The camp

Numbers 2:10
On the south side is the flag of the children of Reuben, in the order of their armies, with Elizur, the son of Shedeur, as their chief.
Numbers 26:5
Reuben, the first son of Israel: the sons of Reuben by their families: of Hanoch, the family of the Hanochites: of Pallu, the family of the Palluites:

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain