Genesis 38:4
And she conceived again, and bare a son; and she called his name Onan.
ā The Restored Word Bible
Context
2 And Judah saw there a daughter of a certain Canaanite, whose name 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 Tamar.