Numbers 26:19

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

Genesis 46:12

The sons of Judah: Er and Onan and Shelah and Perez and Zerah (but Er and Onan died in the land of Canaan). And the sons of Perez were Hezron and Hamul.

Genesis 38:1-10

And it came about at that time, that Judah departed from his brothers and visited a certain Adullamite, whose name was Hirah.

1 Chronicles 2:3-8

The sons of Judah were Er, Onan and Shelah; these three were born to him by Bath-shua the Canaanitess. And Er, Judah’s firstborn, was wicked in the sight of the Lord, so He 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
And it came about at that time, that Judah departed from his brothers and visited a certain Adullamite, whose name was Hirah.
Genesis 46:12
The sons of Judah: Er and Onan and Shelah and Perez and Zerah (but Er and Onan died in the land of Canaan). And the sons of Perez were Hezron and Hamul.
1 Chronicles 2:3
The sons of Judah were Er, Onan and Shelah; these three were born to him by Bath-shua the Canaanitess. And Er, Judah’s firstborn, was wicked in the sight of the Lord, so He put him to death.

General references

Numbers 1:26
Of the sons of Judah, their genealogical registration by their families, by their fathers’ households, according to the number of names, from twenty years old and upward, whoever was able to go out to war,