Genesis 38:9-11

Contemporary English Version

⁹ Onan knew the child would not be his,^[a] and when he had sex with Tamar, he made sure that she would not get pregnant. ¹⁰ The Lord wasn't pleased with Onan and took his life too.

¹¹ Judah did not want the same thing to happen to his son Shelah, and he told Tamar, “Go home to your father and live there as a widow until my son Shelah is grown.” So Tamar went to live with her father.