Genesis 38
1 And it came to pass at that time, that Judah went down from his brethren, and turned into a certain Adullamite, whose name was Hirah.
2 And Judah saw there a daughter of a certain Canaanite, whose name was Shuah; and he took her, and went in and lay with her.
3 And she conceived, and bare a son; and he called his name Er.
4 And she conceived again, and bare a son; and she called his name Onan.
5 And she yet again conceived, and bare a son; and called his name Shelah; and he was at Chezib, when she bare him.
6 And Judah took a wife for Er his firstborn, whose name was Tamar.
7 And Er, Judah's firstborn, was wicked in the sight of the Lord; and the Lord slew him.
8 And Judah said unto Onan, Go and marry thy brother's wife, and raise up seed unto thy brother.
9 And Onan knew that the seed should not be his; and it came to pass, when he married his brother's wife, that he would not lie with her, lest he should raise up seed unto his brother.
10 And the thing which he did displeased the Lord; wherefore he slew him also.
11 Then said Judah to Tamar his daughter-in-law, Remain a widow at thy father's house, till Shelah my son be grown; for he said, Lest peradventure he die also, as his brethren did. And Tamar went and dwelt in her father's house.