Genesis 38:3-5

Young's Literal Translation

³ And she conceiveth, and beareth a son, and he calleth his name Er;

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.