Genesis 38:2-5

2Judah saw there a daughter of a certain Canaanite whose name was 1Shua; and he took her as a wife and had relations with her. 3And she conceived and gave birth to a son, and he named him 2Er. 4Then she conceived again and gave birth to a son, and she named him 3Onan. 5She gave birth to yet another son and named him 4Shelah; and it was at Chezib 5that she gave birth to him.