"And she conceived, and bare a son; and he called his name Er."
The sons of Judah were Er and Onan: and Er and Onan died in the land of Canaan.
And the sons of Judah; Er, and Onan, and Shelah, and Pharez, and Zarah: but Er and Onan died in the land of Canaan. And the sons of Pharez were Hezron and Hamul.