Genesis 38:4 KJV
And she conceived again, and bare a son; and she called his name Onan.
Genesis 38:2–6 KJV Chapter Context
2
And Judah saw there a daughter of a certain Canaanite, whose name was Shuah; and he took her, and went in unto her.
3
And she conceived, and bare a son; and he called his name Er.
4
And she conceived again, and bare a son; and she called his name Onan.
5
And she yet again conceived, and bare a son; and called his name Shelah: and he was at Chezib, when she bare him.
6
And Judah took a wife for Er his firstborn, whose name was Tamar.