The subjects treated in this volume are possibly less known, (even among _some_ who hold the truth of the Lord's _Near_ Return in joyful Hope) than the subjects handled "In the Twinkling of an Eye," but they certainly should have as much interest as the earlier truths, and should lead (those hitherto unacquainted with them) to a careful, prayerful searching of "The Word." The Author would here mark his indebtedness to Dr. Joseph A. Seiss, and Dr. Campbell Morgan, for the inceptive thoughts _re_ Judas Iscariot, and The Antichrist. Dr. Campbell Morgan's very remarkable sermon on "Christ and Judas"--under date December 18, 1908--while being profoundly interesting and illuminating, it has proved to the Author to be the only sound theory of explanation of that perplexing personality--Judas Iscariot--he has ever met. While cleaving close to Scripture, at the same time it has settled the life-long perplexity of the writer of this book, as to the difficulties surrounding "The Traitor." The fictional form has again been adopted in this volume, for the same reasons that obtained in the writing of "In the Twinkling of an Eye." The use of the fictional style for the presentment of sacred subjects is ever a moot-point with some people. Yet, every parable, allegory, etc., (not excepting Bunyan's Master-piece) is _fictional_ form. So that the moot-point really becomes one of _degree_ and not of _principle_--if Bunyan, Milton, and Dante, be allowed to be right. Certain it is that many thousands have read, and have been awakened, quickened, even converted, by reading "In the Twinkling of an Eye," "Long Odds," "He's coming To-morrow," (Mrs. Harriet Beecher Stowe) who would never have looked at an ordinary pamphlet or book upon the subject. One of the truest and most noted leaders (in the "Church") on our great convention platforms, himself an authority, and voluminous writer on the _pre_-milleniarian view of our Lord's near Return, (a perfect stranger, personally, to the writer) wrote within a week or two of the issue of "In the Twinkling of an Eye," saying: "I have just finished reading your _wonderful_ book "In the Twinkling of an Eye." It has _solemnised_ me _very greatly_--more than anything for a long time . . . . May the Lord use your book to _STARTLE_ the careless, ill-taught professing Christians . . . Please send me 24 copies, etc., etc." The desire of the author of "The Mark of the Beast" has been to further "startle" and awaken "careless, ill-taught _professing_ Christians," by giving some faint view of the fate of those _professors_ who will be "_left behind_" to go through the horrors of The Tribulation. To be true to his subject, and to his convictions, the author has had to approach one or two _delicate_ subjects. These he has sought to touch in a veiled, a guarded way. Each reader, if desirous of pursuing more minutely the study of those special parts, can do so by referring to other Christian author's works.