All this, which comes out no doubt with increasing clearness in the Psalms and Prophets, is already implicit in that earlier claim made by the religion of Israel, that the true God is on the side of righteousness, and that to be false to righteousness is to be a traitor to God. In this union of religion and morality neither is sacrificed to the other. Each gains from its union with the other. The religious idea of God, and the religious emotions which gather round it, are progressively purified with the growth of moral ideas; and morality receives new life and strength when the moral law is seen to be the unfolding of the character of a Righteous God, and moral evil is known as 'sin' against a Personal Being. The earnest moral protest which in Greece was directed against the national religion, is found in the Old Testament making common cause with the national religion against the immoral beliefs of heathenism. Hence the Jew was not called upon, as the Greek was, to choose between his religion and his conscience. He never felt the strain which men feel in the present day, when a high and pure morality seems ranged against religious faith. For the Jew every advance in moral insight purified, while it justified, that idea of God, which he believed had come down to him from the 'Father of the Faithful.' His hope of immortality, his faith in the ultimate triumph of the God of Israel, were alike based upon the conviction that God is a God of justice and mercy, and that the Righteous One could not fail His people, or suffer His holy One to see corruption. Even though with the growth of morality, and the fuller unfolding of the character of God, there came, like a shadow cast by light, the deepening consciousness of sin as the barrier between man and God, the Jew refused to believe that the separation was for ever. Sin was a disease which needed healing, a bondage which called for a deliverer, a state of indebtedness from which man could not free himself. But Israel believed in and looked forward to, with confidence and hope, the Redeemer who should come to Zion and save His people from their sins.