Genesis 38:12-17

12Some years later Judah’s wife died. After the time of mourning was over, Judah and his friend Hirah the Adullamite went up to Timnah to supervise the shearing of his sheep.

13Someone told Tamar, “Look, your father-in-law is going up to Timnah to shear his sheep.”

14Tamar was aware that Shelah had grown up, but no arrangements had been made for her to come and marry him. So she changed out of her widow’s clothing and covered herself with a veil to disguise herself. Then she sat beside the road at the entrance to the village of Enaim, which is on the road to Timnah.

15Judah noticed her and thought she was a prostitute, since she had covered her face.

16So he stopped and propositioned her. “Let me have sex with you,” he said, not realizing that she was his own daughter-in-law. “How much will you pay to have sex with me?” Tamar asked.

17“I’ll send you a young goat from my flock,” Judah promised. “But what will you give me to guarantee that you will send the goat?” she asked.