Abraham is a significant figure in the Bible and is considered the patriarch of the Israelites, Ishmaelites, Edomites, and Midianites. He had a wife named Sarah, who bore him a son named Isaac when she was very old. Isaac later married Rebekah, and they had two sons, Esau and Jacob. Jacob, also known as Israel, had twelve sons who became the ancestors of the twelve tribes of Israel. Abraham also had a son named Ishmael with Hagar, Sarah's maidservant. This family lineage is important in the religious traditions of Judaism, Christianity, and Islam.