Numbers 2:10
"On the south will be the divisions of the camp of Reuben under their standard. The leader of the people of Reuben is Elizur son of Shedeur.
Numbers 1:5
Now these are the names of the men who are to help you: from Reuben, Elizur son of Shedeur;
Genesis 49:3-4
Reuben, you are my firstborn, my might and the beginning of my strength, outstanding in dignity, outstanding in power.
Numbers 7:30
On the fourth day Elizur son of Shedeur, leader of the Reubenites, presented an offering.
Numbers 7:35
and for the sacrifice of peace offerings: two bulls, five rams, five male goats, and five lambs in their first year. This was the offering of Elizur son of Shedeur.
Numbers 10:18
The standard of the camp of Reuben set out according to their companies; over his company was Elizur son of Shedeur.
1 Chronicles 5:1
The sons of Reuben, Israel's firstborn -- (Now he was the firstborn, but when he defiled his father's bed, his rights as firstborn were given to the sons of Joseph, Israel's son. So Reuben is not listed as firstborn in the genealogical records.