Genesis 38:28-30

28And when she was in labor, one put out a hand, and the midwife took and tied a scarlet thread on his hand, saying, “This one came out first.” 29But as he drew back his hand, behold, his brother came out. And she said, “What a breach you have made for yourself!” Therefore his name was called aPerez.
 Perez means a breach
30Afterward his brother came out with the scarlet thread on his hand, and his name was called cZerah.

Copyright information for ESV