Genesis 38:3
And she gave birth to a son, and he gave him the name Er.
Genesis 46:12
And the sons of Judah: Er and Onan and Shelah and Perez and Zerah: but Er and Onan had come to their death in the land of Canaan; and the sons of Perez were Hezron and Hamul.
Numbers 26:19
The sons of Judah, Er and Onan: and Er and Onan had come to their death 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 Perez and Zerah: but Er and Onan had come to their death in the land of Canaan; and the sons of Perez were Hezron and Hamul.
Numbers 26:19
The sons of Judah, Er and Onan: and Er and Onan had come to their death in the land of Canaan.