"There is then a certain good beyond the natural society of man in this his condition of mortal life, which is that ultimate beatitude which is looked for after death in the enjoyment of God. And so the Christian, who has acquired a right to that beatitude by the blood of Christ, and has received the earnest of the Holy Spirit in order to attain it, requires, beyond the aid which temporal government gives him for the concerns of this life, a spiritual care which is given to the faithful by the ministers of Christ's Church. Now, as to the ultimate end which they are to seek, the same must be said of the whole mass of men as of one man. If, then, the one man's end lay in any good existing in himself, the ultimate end of government for the mass of men would be similarly that it should reach such good and secure its possession. But all the goods of this present life offer no such end, whether it be health, or riches, or knowledge, or even virtue. For the virtuous life, whether of the individual or the mass, is subordinate to a further end, which is the future enjoyment of God. If that end could be obtained by a power of human nature, it would belong to the office of temporal government to direct men to it, since that is supreme in things purely human. But since man does not attain the end of enjoying God by any merely human power but by divine power, according to St. Paul's word, that 'the grace of God is eternal life,' it requires not a human but a divine government to lead men to that end. And so it is that such a government belongs to a King who is not only man but also God, that is, to our Lord Jesus Christ, who has introduced men to the glory of heaven by making them sons of God. This, then, is the kingdom which has been delivered to Him, and which shall not be broken up, on account of which He is named in Scripture, not Priest only, but King. Hence a royal priesthood is derived from Him; and, what is more, all the faithful of Christ, so far forth as they are His members, are called kings and priests. Therefore the ministry of this kingdom, in order that spiritual things might be distinguished from temporal, has been entrusted not to the kings of the earth but to priests, and in the highest degree to the priest who is over all, the successor of St. Peter, the Vicar of Christ, the Roman Pontiff, to whom all kings of the Christian people are to be subject as to our Lord Jesus Christ himself; for this is in accordance with the principle that those to whom belongs the care of antecedent ends should be subject to him who has the care of the final end, and be directed by his rule."[22]