Numbers 1:5
And these are the names of the men that shall stand with you: of the tribe of Reuben; Elizur the son of Shedeur.
Nave's Topical Index—AKJV

Numbers 2:10
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.
Nave's Topical Index—AKJV

Numbers 7:30,35
On the fourth day Elizur the son of Shedeur, prince of the children of Reuben, did offer:
Nave's Topical Index—AKJV

Numbers 10:18
And the standard of the camp of Reuben set forward according to their armies: and over his host was Elizur the son of Shedeur.
Nave's Topical Index—AKJV