In Greek, it is called Apocalypsis Ioannou, or "Revelation of John." Its title bears the word that comes down to us in the English as "apocalypse," meaning "exposure," "disclosure," or "unveiling." Of course, it also means "revelation," the common title of the Bible’s final book. John, "the disciple whom Jesus loved" (John 21:20), received an extraordinary view of the climax of human history.
It prominently features a door between heaven and earth. It opens, allowing John to enter the dimensions of heaven, and to observe a series of decisive events. It is possible that this open door provides us with some important clues about prophetic timing.
Many have attempted to place this book into the context of history past, history present and history future. Or as Jesus put it in his instruction to John, "Write the things which thou hast seen, and the things which are, and the things which shall be hereafter" (Rev. 1:19).
From that day to this, the faithful have pondered its details in the hope of placing its vast prospect into the understandable scope of human perception. John’s use of phrases such as "after these things," "after this," and "I saw," beg an interpretation that follows the time line to which we are accustomed as human beings … past, present and future. Or as the wag once put it, "The present is the future you worried about in the past." Because of the limitations of our present reality, we are forced to view eternity as a long line with a beginning and an end. But as God declared to the prophet Isaiah, His view includes all that there was, is, or ever will be. Furthermore, His stance allows a view from any perspective.
"Remember the former things of old: for I am God, and there is none else; I am God, and there is none like me,
"Declaring the end from the beginning, and from ancient times the things that are not yet done, saying, My counsel shall stand, and I will do all my pleasure" (Isa. 46:9,10).