Numbers 26:19

Er and Onan were sons of Judah, but they died in Canaan.

Genesis 46:12

The sons of Judah were Er, Onan, Shelah, Perez, and Zerah. (Er and Onan died in Canaan.) The sons of Perez were Hezron and Hamul.

Genesis 38:1-10

At that time Judah left his brothers and went to stay with a man named Hirah, who was from the town of Adullam.

1 Chronicles 2:3-8

The sons of Judah: Er, Onan and Shelah. These three were born to him by a Canaanite woman, the daughter of Shua. Er, Judah's firstborn was wicked in Jehovah's sight; so Jehovah put him to death.

Treasury of Scripture Knowledge

Summary

The sons of Judah were Er and Onan: and Er and Onan died in the land of Canaan.

General references

Bible References

Er and onan

Genesis 38:1
At that time Judah left his brothers and went to stay with a man named Hirah, who was from the town of Adullam.
Genesis 46:12
The sons of Judah were Er, Onan, Shelah, Perez, and Zerah. (Er and Onan died in Canaan.) The sons of Perez were Hezron and Hamul.
1 Chronicles 2:3
The sons of Judah: Er, Onan and Shelah. These three were born to him by a Canaanite woman, the daughter of Shua. Er, Judah's firstborn was wicked in Jehovah's sight; so Jehovah put him to death.

General references

Numbers 1:26
The roster of families and households for the descendants of Judah listed the men by name that were at least twenty years old and eligible for military duty.