Nothing can be further removed from the confusion of the two Powers, or from the absorption of the one by the other, than this Idea of their relation. For it is a purely spiritual power which belongs to the priesthood: any power which it exerts over temporal things is indirect, based simply upon the subjection of those temporal things to the bearer of the divine law; and therefore this indirect Power extends over all temporal things without exception, but over all only so far as they concern the last end of human life.
The sum is this. God is the one Creator, Designer, and Ruler of the order of Nature and the order of Grace, and in both has one end in view, the glorification of Himself by His creatures; which glorification in beings possessed of reason can only consist in the knowledge and love of His infinite perfections.
There is no power on earth of man over man but that which is derived from God, either mediately or immediately; and therefore every power is, strictly speaking, vicarious, a portion of His lordship over the human race, committed to man, and subject to the end of His glorification by His creature: in which is comprehended the ultimate happiness of that creature; since that happiness is itself the exercise of his mind and his will in knowing and loving his Creator, so that God’s honour is the creature’s bliss.
But, further, the order of nature was in its origin united with the order of grace, and subordinated to it. The intervention of the Fall did not dissolve this subordination. The long ages of the Revolt only led up to the Restoration, which was prophesied at the moment of the Revolt, and intended even before it. Thus the Power divinely instituted to carry on the human race—the Power of civil government—the power which represents God in the order of nature, is yet subordinated by Him to the power which He Himself has instituted in the order of Grace.
This second Power at the time of the Restoration springs directly from the Person of the Son; who as He was sent by the Father, so sent His apostles; but He conveyed that power especially to Peter and his heirs in the fulness of a royal priesthood which teaches His faith for ever; so that no power on earth exists so directly instituted by God, and so manifestly vicarious of God’s own power, as that of Peter, viewed in himself and in his heirs; and given with the express promise that all the power of the enemy shall not prevail against it.
In all this God, who cannot be at variance with Himself, made the two Powers to help each other, conferring upon each distinct offices, which concern respectively the natural and the supernatural life of man, but likewise subordinating the natural to the supernatural end in the person and race of the Second Adam, as He had subordinated it in the person of the First Adam.
One of the greatest saints and rulers, who shines in the firmament of the Church with almost unparalleled lustre, has expressed this union under the image of a human body, seeing the natural light by two eyes, but directed by one mind, the mind of Christ. He is the one Head of the two Powers, ruling in temporal sovereignty by the hand of kings, in spiritual by the Priesthood which He has inaugurated. If we imagine the one mind of the God-man thus ruling the Christendom which He has made out of Himself by the two eyes of the kingdom and the priesthood, we reach the divine ideal of the relation between the two Powers. Thus St. Gregory VII. observes in his letter to Rodolph, Duke of Suabia, A.D. 1073:[28] “The sovereign reigns most gloriously, and the Church’s vigour is strengthened, when priesthood and empire are joined in the unity of concord. There should be no fiction, no dross, in that concord. Let us then confer together, for as the human body is directed in the natural light by two eyes, so when these two dignities are united in the harmony of pure religion, the body of the Church is shown to be ruled and enlightened with spiritual light. Let us give our best attention to these matters, so that when you have well entered into what is our wish, if you approve of our reasons as just, you may agree with us. But if you would add or subtract anything from the line of conduct which we have marked out, we shall be ready, if God permit, to consent to your counsels.” The words “if God permit” indicate very gently that subordination, grounded upon the pre-eminence of the divine law, and the divine Ruler who upbears it, which, in case of difference, the natural must yield to the supernatural authority. There is the fullest recognition that to temporal sovereignty all things belong which concern natural right. In these few words I think that St. Gregory VII. has summed up the settled view, policy, and practice of all his predecessors and of all his successors upon the relation between the two Powers, and the importance of their agreement for the good of human society. Never has any one of them denied to human sovereignty the exercise of all those rights which belong to natural law. Never has any one of them failed to maintain that all things which belong to natural law are subordinate to those things which touch the salvation of man, and accordingly that when the two orders of things come into conflict, the natural must yield to the supernatural. It is obvious to add how many mixed things there must be, which enter into both domains, and the treatment of which will affect the harmony between the two Powers.
From all the above it results that the denial of the supernatural end in man, individual or collective, constitutes that which is the complete heathenism. In proportion as the bearers of the Temporal Power have more or less approached this heathenism has their opposition to the Spiritual Power been more or less intense; in proportion as they have acknowledged and acted with a due regard to the supernatural end, they have also acknowledged the Spiritual Power and acted in harmony with it.
The perfect ideal relation between the two Powers has been expressed by the term of marriage, in which Christ, the celestial Bridegroom in the Spiritual Power, espouses the temporal order. This image is in remarkable accordance with the origin of the race, and with the prefiguration of Christ in Adam. It is as if the divine order at the Fall fell into the background, and in its slumber the human was taken out of it. But when the human race awoke in the new Adam, the divine order greeted the human as bone of its bone and flesh of its flesh, and wooed it to rule the world with it in the stable union of wedlock. This image at least may serve to indicate the various relations which have hitherto existed between the two Powers. It is itself the ideal relation intended by God. Then, as a matter of fact, during the first three centuries the Church, with her divine claims, turns to the Temporal Power inviting it to an alliance. This is the Church’s relation to the heathen State, as it were the time of wooing. Next the Temporal Power accepted this invitation and united itself with the Church, so that each preserving its own domain, they ruled the world together. That was the relation of the Church to the truly Catholic State, a marriage disturbed by no division and separation, when unity of faith preserved the marriage vow unbroken. Each then, indeed, might have misunderstandings, because the bearers of the two Powers, like husband and wife, are human beings; but since there was the stable will in both to preserve the marriage vow undefiled in Christ, such misunderstandings were easily overcome. Perhaps this expresses the whole medieval condition of things in this respect as accurately as can be done. Thirdly, the Temporal Power divorced itself from the Church’s faith, and from obedience to her in divine things; that is the state of broken wedlock. It has various decrees. First, the housewife divorces her husband and breaks the marital band: that in itself constitutes the apostate State. Secondly, she dissolves the marriage by entering into connection with another, to whom she gives power over the household, and with his aid oppresses the lawful husband: that is the position of the heretical State. Thirdly, the housewife will no longer tolerate the single rule of him who has alienated her from her husband; she is willing to have more than one temporary connection, and amongst the many perhaps the husband, if he will accept such terms: that is the position of the indifferent State. Thus we get from this image of marriage[29] an adequate measure of all the relations which have hitherto subsisted between Church and State.
But the purpose of the foregoing chapter has been to set forth the ideal relation between the two Powers intended by God in the Incarnation and the Passion of His Son, and springing out of the junction of these two mysteries of His love.