1 Chronicles 2:3

Judah’s sons: Er, Onan, and Shelah. These three were born to him by Bath-shua the Canaanite woman. Er, Judah’s firstborn, was evil in the Lord’s sight, so He put him to death.

Genesis 38:2-10

There Judah saw the daughter of a Canaanite named Shua; he took her as a wife and slept with her.

Genesis 46:12

Judah’s sons: Er, Onan, Shelah, Perez, and Zerah; but Er and Onan died in the land of Canaan.
Perez’s sons: Hezron and Hamul.

Numbers 26:19

Judah’s sons included Er and Onan, but they died in the land of Canaan.

1 Chronicles 9:5

from the Shilonites:
Asaiah the firstborn and his sons;

Treasury of Scripture Knowledge

Summary

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.

Er, and

Bible References

Er, and

from the Shilonites:
Asaiah the firstborn and his sons;

There Judah saw the daughter of a Canaanite named Shua; he took her as a wife and slept with her.

Judah’s sons: Er, Onan, Shelah, Perez, and Zerah; but Er and Onan died in the land of Canaan.
Perez’s sons: Hezron and Hamul.

Judah’s sons included Er and Onan, but they died in the land of Canaan.