Jacobus, also known as Jacob, is a significant figure in the Bible, particularly in the Book of Genesis. He is the son of Isaac and Rebekah and the grandson of Abraham. Jacob is known for his complex family dynamics, including his relationships with his twin brother Esau and his wives, Leah and Rachel. Jacob is often recognized for his role in the founding of the twelve tribes of Israel, as he had twelve sons who became the patriarchs of these tribes. His life story includes themes of struggle, faith, and transformation, particularly highlighted in the account of his wrestling with an angel.