Genesis 38:6-16

When their sons were grown, Judah arranged for Er, his oldest son, to marry a girl named Tamar. But Er had become so wicked in the sight of YAHWEH that YAHWEH ended his life. Then Judah said to Er’s brother Onan, “Your duty is to join yourself to her. Go perform your duty as a brother-in-law and provide an heir for your brother.” Onan, however, did not want to produce a child that would not be his own rightful heir, so whenever he and Tamar had intercourse, he purposely spilled his semen onto the ground to keep her from getting pregnant and having a child that would belong to his dead brother. But what he did was wicked in YAHWEH’s sight, so he took Onan’s life also. Then Judah said to his daughter-in-law Tamar, “Live as a widow in your father’s house until my youngest son Shelah grows up.” So Tamar went home to her parents, but Judah worried that Shelah would end up dead like his brothers. After some time passed, Judah’s wife, the daughter of Shua, died. When his time of mourning was over, he and his friend Hirah the Adullamite went to Timnah to enjoy the festivities at the sheep-shearing. Meanwhile, Tamar had learned that Shelah had grown up, but Judah had still not given him to her to father a child for her deceased husband. So, when Tamar found out her father-in-law was coming to Timnah for the sheep-shearing, she removed her widow’s clothes and covered herself with a veil to disguise herself. And she sat waiting at the crossroads where Judah would have to pass by. When Judah saw her, she was wearing a veil over her face, so he thought she was a prostitute. He had no clue that she was his own daughter-in-law. So he approached her and said, “Come sleep with me.” “What will you give me if I do?” she answered.