Genesis 38:24-29

24About three months later Judah was told, “Your daughter-in-law, Tamar, has been acting like a prostitute, and now she is pregnant.” “Bring her out,” Judah said, “and let her be burned to death!”

25As she was being brought out, she sent her father-in-law this message: “I am pregnant by the man to whom these items belong.” And she added, “Examine them. Whose signet ring, cord, and staff are these?”

26Judah recognized them and said, “She is more in the right than I, since I did not give her to my son Shelah.” And he did not know her intimately again.

27When the time came for her to give birth, there were twins in her womb.

28As she was giving birth, one of them put out his hand, and the midwife took it and tied a scarlet thread around it, announcing, “This one came out first.”

29But then he pulled his hand back, out came his brother, and she said, “What a breakout you have made for yourself!” So he was named Perez.