It is true generally that in order to understand the parts it always necessary to have an appreciation of the whole. The flow of the Book of Revelation as a whole is determinative in our understanding of the various parts of the Book. Getting a handle on the principle message of the book will prevent us from sinking into the quagmire of its intricate visions.
Several answers suggest themselves.
That just about summarizes everything that this great book, the last thing the Bible says, is all about the complete security of God's suffering people. No matter what may come, or when it comes, the believer is safe. But that, in the end, fails to capture the real message of Revelation, not because that message isn't true, but because it fails to ask the right question. We must always be careful to read the Bible theologically . But, it is not the first question to be asked of the Bible.