Genesis 38:24-29

24About three months later, Judah was told, “Tamar, your daughter-in-law, has acted like a prostitute. And now, because of this, she’s pregnant.” “Bring her out, and let her be burned!” Judah demanded.

25But as they were taking her out to kill her, she sent this message to her father-in-law: “The man who owns these things made me pregnant. Look closely. Whose seal and cord and walking stick are these?”

26Judah recognized them immediately and said, “She is more righteous than I am, because I didn’t arrange for her to marry my son Shelah.” And Judah never slept with Tamar again.

27When the time came for Tamar to give birth, it was discovered that she was carrying twins.

28While she was in labor, one of the babies reached out his hand. The midwife grabbed it and tied a scarlet string around the child’s wrist, announcing, “This one came out first.”

29But then he pulled back his hand, and out came his brother! “What!” the midwife exclaimed. “How did you break out first?” So he was named Perez.