Esau's twin is JACOB, a five-letter name. JACOB was the son of Isaac and Rebekah in the Hebrew Bible. He was the older twin brother of Esau, and the two were rivals. JACOB tricked Esau out of his birthright and later received his father's blessing. JACOB then fled to Haran, where he worked for his uncle Laban and married his two daughters. After many years, JACOB returned to Canaan with his family and servants. He was later renamed Israel by God.