Genesis 38:6 YLT

⁴  and she conceiveth again, and beareth a son, and calleth his name Onan;

⁵  and she addeth again, and beareth a son, and calleth his name Shelah; and he was in Chezib in her bearing him.

⁶  And Judah taketh a wife for Er, his first-born, and her name 'is' Tamar;

⁷  and Er, Judah's first-born, is evil in the eyes of Jehovah, and Jehovah doth put him to death.

⁸  And Judah saith to Onan, 'Go in unto the wife of thy brother, and marry her, and raise up seed to thy brother;'