1 Chronicles 2:3

The sons of Judah: Er and Onan, and Shelah: three were born to him from the daughter of Shua the Canaanitess. And Er the first-born of Judah will be evil in the eyes of Jehovah; and he will slay him.

Genesis 38:2-10

And Judah will see there the daughter of a man, a Canaanite, and his name Shuah, and he will take her and will go in to her.

Genesis 46:12

And the sons of Judah: Er and Onan and Shelah and Pharez and Zarah; and Er will die, and Onan in the land of Canaan. And the sons of Pharez will be Hezron and Hamu.

Numbers 26:19

The sons of Judah, Er and Onan; and Er will die, and Onan, in the land of Canaan.

1 Chronicles 9:5

And from the Shilonites: 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 from the Shilonites: Asaiah the first-born and his sons.
Genesis 38:2
And Judah will see there the daughter of a man, a Canaanite, and his name Shuah, and he will take her and will go in to her.
Genesis 46:12
And the sons of Judah: Er and Onan and Shelah and Pharez and Zarah; and Er will die, and Onan in the land of Canaan. And the sons of Pharez will be Hezron and Hamu.
Numbers 26:19
The sons of Judah, Er and Onan; and Er will die, and Onan, in the land of Canaan.