This is a difficult case to make, because Revelation has come under scrutiny for its authenticity and message repeatedly, beginning almost immediately after it was written. Revelation is distinguished by its otherworldly tone and fantastical depictions of monsters and spiritual armies; this seems wholly unfitting with many of the more personal, optimistic and "rational" arguments and characters in the New Testament. Nevertheless, Revelation fulfills several important roles both in its inclusion in the Bible, as well as in its placement as the final book in most bindings.
- Revelation gives Christ numerous opportunities to be challenged by, and be victorious over, the forces of evil. It shows that Christ will endure any and all powers that evil can muster, even if Man cannot.
- Revelation establishes, with a sense of finality, that there is a definite end of the world, to which all should be minded. Just as our own lives end, so will mortal existence itself.
- Revelation shows that God has it within his power to eliminate Satan's influence forever, and that this will be done. This gives rise to questions such as "why does God allow Satan's power to persist?" which lends strength to the argument that sin is a choice God allows us to make.
- If one chooses to interpret Revelation in a largely symbolic manner, it serves as a powerful historical account of the struggles early Christians faced, particularly with how to fit into a society that was so antithetical to their beliefs. Revelation serves to show that, regardless of its earthly power, no manmade kingdom can compare to the power of God's kingdom.
- Revelation reaffirms that Christ's life and importance was not confined to his own lifetime, and his power immense and eternal; he speaks to John, and to the reader, thus;
Fear not; I am the first and the last: I am he that liveth, and was dead; and, behold, I am alive for evermore, Amen; and have the keys of hell and of death.
All of these elements make Revelation an important "bookend" that completes the story of Christian faith by giving a sort of climax, tying up loose ends, and depicting the future not as a murky series of vague promises, but as a vivid, specific prophecy.