The Hebrew prophets had concentrated their incomparable religious energy on the simple demand for righteousness, especially in social and national life. The actual life of the nation, especially of its ruling classes, of course never squared with the religious ideal. The injustice and oppression around them seemed intolerable to the prophets, just because the ethical imperative within them was so strong. So their unsatisfied desire for righteousness took the form of an ardent expectation of a coming day when things would be as they ought to be. God would make bare his holy arm to punish the wicked, to sift the good, to establish his law, and to vindicate the rights of the oppressed. This great “day of Jehovah” would inaugurate a new age, the Kingdom of God, the Reign of God. The phrase, then, embodies the social ideal of the finest religious minds of a unique people. The essential thing in it is the projection into the future of the demand for a just social order. The prophets looked to a direct miraculous act of God to realize their vision, but they were in close touch with the facts of political life and always demanded social action on the human side. Plato’s Republic and More’s Utopia are intellectual productions which have appealed to single idealistic minds. The Hebrew prophets succeeded in socializing their ideal. By the force of religion they wrought the conception of the Kingdom of God into the common mind of a nation as a traditional conviction which was assimilated by every new generation. But when a great idea is appropriated by the masses, it is sure to become cruder to suit their intellect and their need; and when a national ideal is handed on for centuries, it will change with the changing fortunes of the people that holds it. When the Hebrew nation came under the foreign rule of the Assyrians, Persians, and finally the Romans, its freedom and chance for political action were lost, and its political ideals, too, deteriorated. The Kingdom hope became theological, artificial, a scheme of epochs of predetermined length and of marvelous stage settings. Yet, even in this form, it was a splendid hope of emancipation, of national greatness, and of future justice and fraternity, and it helped to keep the nation’s soul alive amid crushing sorrows.