Genesis 25:24-26, 29-30

When her time to give birth came, sure enough, there were twins in her womb. The first came out reddish, as if snugly wrapped in a hairy blanket; they named him Esau (Hairy). His brother followed, his fist clutched tight to Esau’s heel; they named him Jacob (Heel). Isaac was sixty years old when they were born.

One day Jacob was cooking a stew. Esau came in from the field, starved. Esau said to Jacob, “Give me some of that red stew—I’m starved!” That’s how he came to be called Edom (Red).