1 Chronicles 2:3

Sons of Judah: Er, and Onan, and Shelah, three have been born to him of a daughter of Shua the Canaanitess. And Er, first-born of Judah, is evil in the eyes of Jehovah, and He putteth him to death.

Genesis 38:2-10

and Judah seeth there the daughter of a man, a Canaanite, whose name is Shuah, and taketh her, and goeth in unto her.

Genesis 46:12

And sons of Judah: Er, and Onan, and Shelah, and Pharez, and Zarah, (and Er and Onan die in the land of Canaan.) And sons of Pharez are Hezron and Hamul.

Numbers 26:19

Sons of Judah are Er and Onan; and Er dieth -- Onan also -- in the land of Canaan.

1 Chronicles 9:5

And of the Shilonite: Asaiah the first-born, and his sons.

Treasury of Scripture Knowledge

Summary

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.

Bible References

Er, and

1 Chronicles 9:5
And of the Shilonite: Asaiah the first-born, and his sons.
Genesis 38:2
and Judah seeth there the daughter of a man, a Canaanite, whose name is Shuah, and taketh her, and goeth in unto her.
Genesis 46:12
And sons of Judah: Er, and Onan, and Shelah, and Pharez, and Zarah, (and Er and Onan die in the land of Canaan.) And sons of Pharez are Hezron and Hamul.
Numbers 26:19
Sons of Judah are Er and Onan; and Er dieth -- Onan also -- in the land of Canaan.