There are three books in our canon which we attribute to St. John, besides the two short letters to Gaius and the Elect Lady. Of these, his Gospel appears to me a perfect summary of _Christian Theology_, his First Epistle of _Christian Ethics_, his Apocalypse of _Christian Politics_. I do not despair of seeing even this last book come forth, out of the hands of soothsayers and prognosticators, as a real lesson-book respecting the dealings of God with the nations, respecting the method and the issues of His righteous government. The craving there is in the minds of men for a faithful history of the past, which shall be also a faithful guide to the future, will surely be satisfied some day; this book may teach us how it shall be satisfied. It requires even less faith to expect that when we are tired of speculations about the maxims and principles of morality, which do not make our morality better, while yet their very failure convinces us that there are principles which we did not create and which must bind us, we may turn to an old and simple document, which sets forth the commandment that has life--which tells us what the end of our existence is, what has deranged it, how each man may recover all that he has lost, and be what he was created to be. I had thought at first that these Bible ethics might be more suitable to a congregation of men, busy in the world and valuing higher maxims only as they can test them by their application to its daily occasions, than what I have called by the more imposing name of Theology. I should have acted upon that thought if I had believed that St. John's theology was of that stamp which has made the word agreeable to schoolmen, offensive to those who would turn words into acts. If theology is a collection of dry husks, the granaries which contain those husks will be set on fire, and nothing will quench the fire till they be consumed. It is just because I find in St. John the grain which those husks sometimes conceal, for which they are sometimes a substitute; it is just because theology in his Gospel offers itself to us as a living root, out of which all living powers, living thoughts, living acts may develop themselves; it is just because there is nothing in him that is abstract, because that which is deep and eternal proves itself to be deep and eternal by entering into all the relations of time, by manifesting itself in all the common doings of men; it is therefore, I believe, that he makes his appeal, not to the man of technicalities, not to the school doctor, but to the simple wayfarer, and at the same time to the man of science who does not forget that he is a man and who expects to ascertain principles only by the honest method of experiment.