Leah became pregnant and gave birth to a son. She named him Reuben [Here’s My Son], because she said, “Certainly, the Lord has seen my misery; now my husband will love me!”
These are the sons of Reuben, Israel’s firstborn. (Although he was the firstborn, his rights as firstborn were given to his nephews, Joseph’s sons, because he dishonored his father’s bed. However, Joseph couldn’t be listed in the genealogy as the firstborn son.
These were the heads of the families: The sons of Reuben, Israel’s firstborn, were Hanoch, Pallu, Hezron, and Carmi. These were the families descended from Reuben.
The roster of families and households for the descendants of Reuben, Israel’s firstborn son, listed every man by name who was at least 20 years old and eligible for military duty.