Numbers 2:10

The standard of the camp of Reuben shall be southward according to their hosts; and the prince of the sons of Reuben shall be Elizur the son of Shedeur;

Numbers 1:5

And these are the names of the men that shall stand with you: for Reuben, Elizur the son of Shedeur;

Genesis 49:3-4

Reuben, thou art my firstborn, My might, and the firstfruits of my vigour: Excellency of dignity, and excellency of strength.

Numbers 7:30

On the fourth day, the prince of the children of Reuben, Elizur the son of Shedeur.

Numbers 7:35

and for a sacrifice of peace-offering, two oxen, five rams, five he-goats, five yearling lambs. This was the offering of Elizur, the son of Shedeur.

Numbers 10:18

And the standard of the camp of Reuben set forward according to their hosts, and over his host was Elizur the son of Shedeur;

1 Chronicles 5:1

And the sons of Reuben the firstborn of Israel (for he was the firstborn; but, inasmuch as he defiled his father's bed, his birthright was given to the sons of Joseph the son of Israel; but the genealogy is not registered according to the birthright,

Treasury of Scripture Knowledge

Summary

On the south side shall be the standard of the camp of Reuben according to their armies: and the captain of the children of Reuben shall be Elizur the son of Shedeur.

Bible References

Camp of reuben

Genesis 49:3
Reuben, thou art my firstborn, My might, and the firstfruits of my vigour: Excellency of dignity, and excellency of strength.
1 Chronicles 5:1
And the sons of Reuben the firstborn of Israel (for he was the firstborn; but, inasmuch as he defiled his father's bed, his birthright was given to the sons of Joseph the son of Israel; but the genealogy is not registered according to the birthright,

Elizur

Numbers 1:5
And these are the names of the men that shall stand with you: for Reuben, Elizur the son of Shedeur;
Numbers 7:30
On the fourth day, the prince of the children of Reuben, Elizur the son of Shedeur.
Numbers 10:18
And the standard of the camp of Reuben set forward according to their hosts, and over his host was Elizur the son of Shedeur;

General references

Numbers 1:20
And the sons of Reuben, Israel's eldest son, their generations, after their families, according to their fathers' houses, by the number of the names, according to their polls, every male from twenty years old and upward, all that went forth to military service:
Numbers 3:29
The families of the sons of Kohath encamped on the side of the tabernacle southward.
Numbers 7:30
On the fourth day, the prince of the children of Reuben, Elizur the son of Shedeur.