1 Chronicles 2:3
The sons of Judah; Er, and Onan, and Shelah: which three were born unto him of the daughter of Shua the Canaanitess. And Er, the firstborn of Judah, was evil in the sight of the Lord; and he slew him. (1 Chronicles 2:3)
R03 Genesis 38:2~5, Genesis 46:12  R04 Genesis 38:7
Genesis 38:2~5
Genesis 38:2 And Judah saw there a daughter of a certain Canaanite, whose name was Shuah; and he took her, and went in unto her. 10 I MC VC
Genesis 38:3 And she conceived, and bare a son; and he called his name Er. 10 I MC VC
Genesis 38:4 And she conceived again, and bare a son; and she called his name Onan. 10 I MC VC
Genesis 38:5 And she yet again conceived, and bare a son; and called his name Shelah: and he was at Chezib, when she bare him. 10 I MC VC
Genesis 46:12
Genesis 46:12 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. 10 I MC VC
Genesis 38:7 And Er, Judah’s firstborn, was wicked in the sight of the Lord; and the Lord slew him. 10 I MC VC