Genesis 46:12
And the sons of Judah; Er, and Onan, and Shelah, and Pharez, and Zerah: but Er and Onan died in the land of Canaan. And the sons of Pharez were Hezron and Hamul.
Numbers 26:21
And the sons of Pharez were; of Hezron, the family of the Hezronites: of Hamul, the family of the Hamulites.
1 Chronicles 2:5
The sons of Pharez; Hezron, and Hamul.