To this day, Fr. Sylvester Berry’s book on the Apocalypse, now digitized by KIC for Kindle, is quoted in other Catholic titles on the revelations of God to St. John.
The Apocalypse (Greek for “Revelationsâ€) is unlike any other book of the New Testament—and is full of consolation and instruction to all who read its inspired and prophetic words. It lifts the soul up to the beauty and grandeur of Heaven—shows us in all their glory the joys and triumphs of those who were once like ourselves—but who are now changed and happy with those “who have washed their robes and made them white in the blood of the Lamb.†How consoling it is to turn from the sordid things of earth—to be carried away with the sublime words that lead us to the throne of God—to the company of the Angels and Saints—to the new Jerusalem with streets of gold—to the river and tree of life—to hear the voice of God Himself saying, “Blessed is he that keepeth the words of the prophecy of this book.â€
The following pages will be most interesting to those who love to study the word of God. Father Berry has entered a new field—for there is practically no study of the Apocalypse in the English language—and the points and explanations he has placed before us are both interesting and instructive. The student will read it with pleasure and profit. St. Jerome tells us, “The Apocalypse has as many mysteries as words—or rather mysteries in every word.†The author has tried in a simple scholarly way to help us view them all with pleasure and understanding.—Bishop James Hartley, Preface.
Christ has promised that the gates of hell shall never prevail against His Church (Matt. 16:18), but this very promise foreshadows a mighty conflict with the powers of darkness. The Apocalypse tells of the trials and sufferings of the Church in this great conflict and prophesies her final triumph according to the promise of Christ: “Behold I am with you all days even to the consummation of the world†(Matt. 28:20). Hence, the prophecies of the Apocalypse should be a source of consolation when we see the Church opposed and persecuted for we have the assurance of the Holy Ghost that she shall come forth triumphant and reign peacefully over all nations.
 
In this Catholic classic, Fr. Berry explains in layman’s terms how St. John singles out the most important historical events which serve as guide-posts along the course of centuries. Including patristic and other Catholic references, “Father Berry meets a need by his simple, Catholic interpretation of this most difficult apocalyptic book.†In Barry’s examination, “the Revelations of St. John are divided into three parts and foretell the history of the Church during three periods…Father Berry is to be congratulated on this scholarly and illuminative exposition of a book of the New Testament, whose obscurity prevents many from reading it†(America, October 22,1921).