1 Chronicles 5:1

Reuben’s Descendants

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.

1 Chronicles 5:3

5:3 The sons of Reuben, Israel’s firstborn:

Hanoch, Pallu, Hezron, and Carmi.