The Book of Revelation is the last book to be included in the New Testament canon during the 4th century. The author is traditionally known as John the Apostle, who was originally one of Christ's disciples. He lived in exile on the island of Patmos, which was part of Asia Minor, as punishment for spreading the gospel of Christ. John’s prophecies in the book were inspired by a series of dreams and visions, and is considered the most controversial book of the Bible because of the diversity of its interpretation. His writings were also called The Revelation of John and The Apocalypse of John. However, John himself starts his book with the words, “The revelation of Jesus Christ…”.

John wrote the Book of Revelations around 96 CE, as prophetic letters to the seven Churches of Asia Minor while they were under Roman Authority. His letters consisted of metaphors and apocalyptic imagery. This type of language was not difficult for the people of that era to understand because it was common. However, for modern readers, the Book of Revelations may be very hard to understand. Therefore, there are many interpretations. Some believe that some of the prophecies have already been fulfilled, while others feel that they are being fulfilled now or will be the future. Some Christian sects will not allow Revelations to be read in church. Some theologians have rejected the book altogether.

John's letters were meant to give hope to the the seven Churches, as his visions were revealed to him while under persecution by the Roman empire. His prophecy consisted of the events that would lead to the final defeat of Satan and the establishment of Christ's kingdom on earth forever.