Genesis 25:24-26, 30

When the time came, Rebekah gave birth to twins. The first baby was born red. Since his skin was like a hairy robe, he was named Esau. When the second baby was born, he was holding on to Esau’s heel, so that baby was named Jacob. Isaac was sixty years old when they were born.

So Esau said to Jacob, “Let me eat some of that red soup, because I am weak with hunger.” (That is why people call him Edom.)