Genesis 46:12
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.
Genesis 38:1-5
1
It happened at that time, that Judah went down from his brothers, and visited a certain Adullamite, whose name was Hirah.
2
Judah saw there a daughter of a certain Canaanite whose name was Shua. He took her, and went in to her.
3
She conceived, and bore a son; and he named him Er.
4
She conceived again, and bore a son; and she named him Onan.
5
She yet again bore a son, and named him Shelah: and he was at Chezib, when she bore him.