Genesis 38:12-14

12After some time Judah’s wife, the daughter of Shua, died. After Judah was consoled, he left for Timnah to visit his sheepshearers, along with his friend Hirah the Adullamite.

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

14So she removed her widow’s clothes and covered herself with a veil. She wrapped herself and sat at the entrance to Enaim which is on the way to Timnah. (She did this because she saw that she had not been given to Shelah as a wife, even though he had now grown up.)