Genesis 38:13-16

13As soon as Tamar was told that her father-in-law was on his way to Timnah to shear his sheep,

14she took off her widow’s clothes, covered her face with a veil, and disguised herself. Then she sat down at the entrance to Enaim, which is on the road to Timnah. (She did this because she realized that Shelah was grown up now, and she hadn’t been given to him in marriage.)

15When Judah saw her, he thought she was a prostitute because she had covered her face.

16Since he didn’t know she was his daughter-in-law, he approached her by the roadside and said, “Come on, let’s sleep together!” She asked, “What will you pay to sleep with me?”