Numbers 26:19

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

Genesis 46:12

And the sons of Judah: Er, and Onan, and Shelah, and Perez, and Zarah, 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 to pass at that time, that Judah went down from his brothers, and turned in to a certain Adullamite, whose name was Hirah.

1 Chronicles 2:3-8

The sons of Judah: Er, and Onan, and Shelah, which three were born to him of Shua's daughter the Canaanitess. And Er, Judah's first-born, was wicked in the sight of LORD, and he killed him.

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 to pass at that time, that Judah went down from his brothers, and turned in to a certain Adullamite, whose name was Hirah.
Genesis 46:12
And the sons of Judah: Er, and Onan, and Shelah, and Perez, and Zarah, 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: Er, and Onan, and Shelah, which three were born to him of Shua's daughter the Canaanitess. And Er, Judah's first-born, was wicked in the sight of LORD, and he killed him.

General references

Numbers 1:26
Of the sons of Judah, their generations, by their families, by their fathers' houses, according to the number of the names, from twenty years old and upward, all that were able to go forth to war,