The word apocalipse (the Portuguese title for the last book of the Bible) means revelation. God wanted to reveal truths to his people. He chose the apostle John to reveal to them the message that he wanted to communicate.
I was in the Spirit on the Lord’s Day when I heard behind me a loud voice like a trumpet, saying: “Write in a book what you see and send it to the seven churches—to Ephesus, Smyrna, Pergamum, Thyatira, Sardis, Philadelphia, and Laodicea.”
Revelation 1.10-11 NET
We must remember that the books of the Bible were written, first, to people or groups that lived during the same time period as their authors. We need to read these books with the original situation in mind. (This especially applies to the book of Revelation!) It’s necessary to appreciate what they understood in the reading and seek to know the message that they comprehended.
After doing this, we can seek for application for ourselves and truths that hold for our time. There are many parallels between the first readers and ourselves, which makes the process rather easy.
In this way the wisdom of God planned the Scriptures, grounded upon historical situations, with a message that speaks to all in every age. By such means, God throws us back always to the original pattern whose center is Christ.