The feast of Christ the King is a very new one, although the image of Christ as King is as old as Christianity. Pope Pius XI established the feast with his encyclical Quas Primas in 1925 to remind the World after the horrors of World War I and its aftermath that God was in charge.
This kingdom is spiritual and is concerned with spiritual things. That this is so the above quotations from Scripture amply prove, and Christ by his own action confirms it. On many occasions, when the Jews and even the Apostles wrongly supposed that the Messiah would restore the liberties and the kingdom of Israel, he repelled and denied such a suggestion. When the populace thronged around him in admiration and would have acclaimed him King, he shrank from the honor and sought safety in flight. Before the Roman magistrate he declared that his kingdom was not of this world. The gospels present this kingdom as one which men prepare to enter by penance, and cannot actually enter except by faith and by baptism, which, though an external rite, signifies and produces an interior regeneration. This kingdom is opposed to none other than to that of Satan and to the power of darkness. It demands of its subjects a spirit of detachment from riches and earthly things, and a spirit of gentleness. They must hunger and thirst after justice, and more than this, they must deny themselves and carry the cross.
Prior to the American Revolution an English aristocrat related an incident in a letter. He asked an American servant who his master was, and the man responded unhesitatingly: My Lord Jesus Christ! The aristocrat found this hilarious, but the servant was reflecting a very old Christian view.
Christ Pantocrator is one of the more popular images by which Christians pictured, after the edict of Milan, Christ, the Lord of all. This representation ties in nicely with the traditional American cry of “We have no King but Jesus!” which became popular during the American Revolution.
Our wisest statesman have always remembered that behind the trappings of power of this World that God is ultimately the one who has charge of the fate of nations as well as individuals. Abraham Lincoln was utterly convinced of this as he indicated in a letter to Eliza P. Gurney on September 4, 1864 as the Civil War teetered in the balance:
The purposes of the Almighty are perfect, and must prevail, though we erring mortals may fail to accurately perceive them in advance. We hoped for a happy termination of this terrible war long before this; but God knows best, and has ruled otherwise. We shall yet acknowledge His wisdom and our own error therein. Meanwhile we must work earnestly in the best light He gives us, trusting that so working still conduces to the great ends He ordains. Surely He intends some great good to follow this mighty convulsion, which no mortal could make, and no mortal could stay.