The Bible
Genesis 38
Judah has three sons by a Canaanite woman—Er and Onan are slain by the Lord—Tamar, disguised as a harlot, bears twins by Judah.
3And she conceived, and bare a son; and he called his name Er.
4And she conceived again, and bare a son; and she called his name Onan.
6And Judah took a wife for Er his firstborn, whose name was Tamar.
7And Er, Judah’s firstborn, was wicked in the sight of the Lord; and the Lord slew him.
10And the thing which he did displeased the Lord: wherefore he slew him also.
13And it was told Tamar, saying, Behold thy father in law goeth up to Timnath to shear his sheep.
15When Judah saw her, he thought her to be an harlot; because she had covered her face.
27¶ And it came to pass in the time of her travail, that, behold, twins were in her womb.