Genesis 38:15-19

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. He responded, “I will send you a young goat from the flock.” “What guarantee can you give me that you will really send it?” she asked. “Well, what pledge do you want?” Judah asked. Tamar answered, “Give me your necklace with your personal signet and the staff you’re holding.” So, he gave them to her, and he went and slept with her. When she got up and went home, she removed her veil and put her widow’s garment back on. Later, she discovered she was pregnant.