Genesis 38:30

²⁸  And it came to pass, when she travailed, that the one put out his hand: and the midwife took and bound upon his hand a scarlet thread, saying, This came out first.

²⁹  And it came to pass, as he drew back his hand, that, behold, his brother came out: and she said, How hast thou broken forth? this breach be upon thee: therefore his name was called Pharez.

³⁰  And afterward came out his brother, that had the scarlet thread upon his hand: and his name was called Zarah.