Genesis 38:4-6

New American Standard Bible

⁴ Then she conceived again and gave birth to a son, and she named him ^(A)Onan. ⁵ She gave birth to yet another son and named him ^(B)Shelah; and it was at Chezib ^[a]that she gave birth to him.

⁶ Now Judah took a wife for Er his firstborn, and her name was Tamar.