Halevi now attempts to demonstrate the superiority of his religion, Judaism. The preservation of the Israelites in Egypt and in the wilderness, the delivery to them of the Torah (law) on Mount Sinai, and their later history are to him evident proofs of its superiority. He impresses upon the king the fact that the favor of God can be won only by following God's precepts in their totality, and that those precepts are binding only on Jews. The question of why the Jews were favored with God's instruction is answered in the Kuzari at I:95: it was based upon their pedigree, i.e., Noah's most pious son was Shem. His most pious son was Arpachshad etc. Abraham was Arpachshad's descendant, Isaac was Abraham's most pious son, and Jacob was Isaac's most pious son. The sons of Jacob were all worthy and their children became the Jews. The Jew then shows that the immortality of the soul, resurrection, reward, and punishment are all implied in Scripture and are referred to in Jewish writings.