Genesis 49:3
Reuben, you are my firstborn, my might, and the beginning of my strength, excelling in honor, excelling in power.

Genesis 49:4
Uncontrolled as the waters, you will no longer excel, because you went up to your father's bed, onto my couch and defiled it.

Numbers 1:5
These are the names of the men who are to assist you: From the tribe of Reuben, Elizur son of Shedeur;