The title of the book, Revelation, comes from the Greek word apocalypse this refers to an unveiling or a disclosure of something as yet unknown. The traditional belief or conventional interpretation of the word Revelation has tended to be narrowed to being futuristic only. This is not the case with the Book of Revelation as it had been thought to be.  However things in the past could be revealed to one's knowledge and things in the present age and the things to come, this is the case with the book of Revelation.