Genesis 38:26-30

26Judah recognized them and said, “She is more righteous than I, since I wouldn’t give her to my son Shelah.” And he did not sleep with her again. 27When the time came for her to give birth, there were twin boys in her womb. 28As she was giving birth, one of them put out his hand; so the midwife took a scarlet thread and tied it on his wrist and said, “This one came out first.” 29But when he drew back his hand, his brother came out, and she said, “So this is how you have broken out!” And he was named Perez. 30Then his brother, who had the scarlet thread on his wrist, came out. And he was named Zerah.