Genesis 38:3
And she conceived, and bore a son; and he called his name Er.
Genesis 46:12
And the sons of Judah; Er, and Onan, and Shelah, and Pharez, and Zerah: but Er and Onan died in the land of Canaan. And the sons of Pharez were Hezron, and Hamul.
Numbers 26:19
The sons of Judah were Er and Onan: and Er and Onan died in the land of Canaan.
Treasury of Scripture Knowledge
Summary
And she conceived, and bare a son; and he called his name Er.
Bible References
Er
Genesis 46:12
And the sons of Judah; Er, and Onan, and Shelah, and Pharez, and Zerah: but Er and Onan died in the land of Canaan. And the sons of Pharez were Hezron, and Hamul.
Numbers 26:19
The sons of Judah were Er and Onan: and Er and Onan died in the land of Canaan.