"It has long been a common custom to give to Christ the metaphorical title of "King," because of the high degree of perfection whereby he excels all creatures. So he is said to reign "in the hearts of men," both by reason of the keenness of his intellect and the extent of his knowledge, and also because he is very truth, and it is from him that truth must be obediently received by all mankind. He reigns, too, in the wills of men, for in him the human will was perfectly and entirely obedient to the Holy Will of God, and further by his grace and inspiration he so subjects our free-will as to incite us to the most noble endeavors. He is King of hearts, too, by reason of his "charity which exceedeth all knowledge." And his mercy and kindness which draw all men to him, for never has it been known, nor will it ever be, that man be loved so much and so universally as Jesus Christ. But if we ponder this matter more deeply, we cannot but see that the title and the power of King belongs to Christ as man in the strict and proper sense too. For it is only as man that he may be said to have received from the Father "power and glory and a kingdom," since the Word of God, as consubstantial with the Father, has all things in common with him, and therefore has necessarily supreme and absolute dominion over all things created. "
"Moreover, Christ himself speaks of his own kingly authority: in his last discourse, speaking of the rewards and punishments that will be the eternal lot of the just and the damned; in his reply to the Roman magistrate, who asked him publicly whether he were a king or not; after his resurrection, when giving to his Apostles the mission of teaching and baptizing all nations, he took the opportunity to call himself king, confirming the title publicly, and solemnly proclaimed that all power was given him in heaven and on earth. These words can only be taken to indicate the greatness of his power, the infinite extent of his kingdom. What wonder, then, that he whom St. John calls the "prince of the kings of the earth" appears in the Apostle's vision of the future as he who "hath on his garment and on his thigh written 'King of kings and Lord of lords!'." It is Christ whom the Father "hath appointed heir of all things"; "for he must reign until at the end of the world he hath put all his enemies under the feet of God and the Father."