But it is said that the rhetorical style of the one book differs radically from that of the other. Doubtless. The one book is an apocalypse, the other is a biography. John may not have been a practiced _litterateur,_ but he certainly had literary sense and feeling enough to know how to put a very different color and atmosphere into an apocalyptical writing from that which he would employ in a report of the life and words of Jesus. Without any reflection, indeed, he would instinctively use the apocalyptic imagery; his pages would flare and resound with the lurid symbolism peculiar to the apocalypses. How definite a type of literature this was we shall presently see; no writer, while using it, would clearly manifest his own personality. And if through all this disguise we do discern symptoms of a temper more fervid and a spirit more Judaic than that which finds expression in the Fourth Gospel, let us remember that the ripened wisdom of the old man speaks in the latter, and the intense enthusiasm of conscious strength in the former. This John, let us not forget, was not in his youth a paragon of mildness; it was he and his brother James who earned the sobriquet of Boanerges, "Sons of thunder;" it was they who wanted to call down fire from heaven to consume an inhospitable Samaritan village. Moreover, we shall see as we go on that the times in which this apocalypse was written were times in which the mildest, mannered men would be apt to forget their decorum, and speak with unwonted intensity. A man with any blood in him, who undertook to write in the year 68 of the themes with which the soul of this apostle was then on fire, would be likely to show, no matter in what vehicle of speech his thought might be conveyed, some sign of the tumult then raging within him. All these circumstances, taken together, enable me to explain the difference between the literary form of the Revelation and that of the Gospel. But when we come to look a little more deeply into the meaning of the two books, we shall find that beneath all this dissimilarity there are some remarkable points of agreement. Quite a number of the leading ideas and conceptions of the one book reappear in the other; the idea of Christ as the _Word_ or _Logos_ of God, the representation of Christ as the Lamb, as the Good Shepherd, as the Light, are peculiar to John; we find them emphasized in the Gospel and in the Revelation. The unity of the two books in fundamental conceptions has been admirably brought out by Dr. Sears, in his volume entitled "The Heart of Christ." And after weighing the evidence, I find neither historical nor psychological reasons sufficient to overthrow my belief that the Fourth Gospel, as well as the Revelation, was written by John the Apostle.