Reference

Genesis 38:5

And she yet again conceived, and bare a son; and called his name Shelah: and he was at Chezib, when she bare him.
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.

7

And Er, Judah’s firstborn, was wicked in the sight of the Lord; and the Lord slew him.