Genesis 38:27

25When she was brought out, she sent to her father-in-law, saying, “I am with child by the man who owns these.” She also said, “Please discern whose these are—the signet, and the cords, and the staff.”

26Judah acknowledged them, and said, “She is more righteous than I, because I didn’t give her to Shelah, my son.” He knew her again no more.

27In the time of her travail, behold, twins were in her womb.

28When she travailed, one put out a hand, and the midwife took and tied a scarlet thread on his hand, saying, “This came out first.”

29As he drew back his hand, behold, his brother came out, and she said, “Why have you made a breach for yourself?” Therefore his name was called Perez.