Koester has helped me craft a non-violent literary reading of Revelation, which I doubt is what John intended, but it is the only way to make this book somewhat tolerable. I go a little further than Koester does (more on that later).
A Non-violent Literary Reading:
Revelation can be read as imaginative literature (fiction rather than prediction). It contains timeless themes and ideas that were relevant to the first-century audience and for those in the succeeding generations.
The genre provides John a way to swing back and forth from the heavenly throne room (where Christ is reigning) back to earth (where the Empire reigns supreme), and in so doing, John could be attempting to encourage people to give their allegiance to Christ, rather than to submit to the temporary domination system on earth. Every generation needs to correct its perspective and see what is lasting and valuable.
A Theme of the book is that nothing is as it seems. The scene where John hears about a Lion who has conquered, only to turn and see a lamb that was slain, should shape our expectation of how the lamb conquers. Rather than through force and violence, the lamb conquers by laying down his life for others. Rather than it being to the detriment of those who are conquered, it is for their benefit.
Since the rest of the book shows the Lamb conquering with force and violence, destroying the earth, torturing and slaughtering people, we should conclude that something else is going on, as this is incongruent with the Lamb.
Thus, with the repeated cycles of torture, plagues, destruction, and death (the seals, trumpets, and bowls), we should expect a scene that turns everything on its head, which we indeed find.
After the Martyrs cry out for vengeance and the Lamb responds by destroying the entire cosmos in his furious rage, we then have a series of trumpets, each getting worse, eventually all of humanity is tortured for a continuous five months, and then 200,000,000 fire-breathing lion-faced horses kill a third of the human race, after which we are told NOT A SINGLE person repents. All this sadistic torture, destruction, and slaughter does not result in a single person turning to God. But then, the seventh Trumpet (when we'd expect something even worse), we have a pause in heaven, and the two witnesses, who, after their deaths, resurrection, and ascension, we read that only a 10th of the city was destroyed, and the rest (90%) gives glory to God. Anyhow, when these are placed side by side, we see one path (the lamb acting like the Beast of beast) would result in NO one repenting, whereas a couple of witnesses could lead to 90% being saved.
Now, if we suppose God wants all people to repent and desires the salvation of all, it then can be assumed John is giving us a "What if God acted this way? vision, to explain precisely WHY GOD DOES NOT WORK THIS WAY! It would be ineffective. It would not bring what God wants. Instead, if the Lamb acted like the Beast, it would simply result in pointless and unnecessary misery, suffering, destruction, and death.
Next, in the repeated cycles of the final judgment, depicted as everyone being trampled into a river of gore running 200 miles, slain by a sword protruding from the Lamb's mouth, burned alive with fire from heaven, and cast into a lake of fire, there is again one scene that unlocks this. The sword that comes out of the Lamb's mouth is the word of truth. What does truth destroy? It destroys falsehood. So John could be giving us a glimpse of how God will destroy evil, and it would be through light and truth. The worldwide genocide is not of flesh and blood human beings, but of the false ideas and perspectives that controlled and bound them.
The cycle showing the fall of Babylon could be working like Dickens' "The Christmas Carol." Koester claims this beautifully. It is not showing what will happen; it is providing a glimpse of a possible future to lead to change in the present.
Finally, the gates of the New Jerusalem are left open, so that those who were judged, having washed their robes, can enter the city, partake of the tree of life, and be healed.
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While Koester goes some of the way, once he gets to the Bowls and the vision of the end of all things, he just reverts to the traditional reading and tries to justify the unjustifiable. He has to defend the depictions of the Lamb out beasting the beast. Justify the cruel and sadistic Lamb who pointlessly tortures almost everyone on earth, utterly destroying the planet and all the animals and fish, while leaving the birds so they can gorge on people's flesh. Koester must defend the worldwide genocide initiated by the Lamb. He has to justify how the Lamb is shown establishing His kingdom through force, violence, and brutality, and how the Lamb is shown to be infinitely more evil than the Beast and the Dragon. He must get cozy with how Lamb is shown to be more wicked than every earthly tyrant rolled into one and call it "justice". You might as well call all that Nero, Stalin, Mao, Pol Pot and Hitler did as holy, just and good, for it pales in comparison to suffering and death caused by the Lamb. Anyhow, it is unspeakably repugnant and a huge travesty and tragedy that the book made it into the bible by the skin of its teeth. Sadly, it did make it into our bible, but still the way Jesus is depicted should NOT be justified. It must either be condemned as an evil and blasphemous depiction of Jesus, the total antithesis to all that is good, or something else is going on. Koester is the one who initially seems to show something else is going on, but then sadly switches gears, thus the 4 stars instead of 5.