Genesis 38:5-7

King James Version

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.