Genesis 38:6-16

And Judah took a wife for Er his first-born, and her name was Tamar. And Er, Judah’s first-born, was wicked in the sight of Jehovah; and Jehovah slew him. And Judah said unto Onan, Go in unto thy brother’s wife, and perform the duty of a husband’s brother unto her, and raise up seed to thy brother. And Onan knew that the seed would not be his; and it came to pass, when he went in unto his brother’s wife, that he spilled it on the ground, lest he should give seed to his brother. And the thing which he did was evil in the sight of Jehovah: and he slew him also. Then said Judah to Tamar his daughter-in-law, Remain a widow in thy father’s house, till Shelah my son be grown up; for he said, Lest he also die, like his brethren. And Tamar went and dwelt in her father’s house. And in process of time Shua’s daughter, the wife of Judah, died; and Judah was comforted, and went up unto his sheep-shearers to Timnah, he and his friend Hirah the Adullamite. And it was told Tamar, saying, Behold, thy father-in-law goeth up to Timnah to shear his sheep. And she put off from her the garments of her widowhood, and covered herself with her veil, and wrapped herself, and sat in the gate of Enaim, which is by the way to Timnah; for she saw that Shelah was grown up, and she was not given unto him to wife. When Judah saw her, he thought her to be a harlot; for she had covered her face. And he turned unto her by the way, and said, Come, I pray thee, let me come in unto thee: for he knew not that she was his daughter-in-law. And she said, What wilt thou give me, that thou mayest come in unto me?