So... do we feel confident in our understanding of Revelation so far? The answer to that is likely "yeah, not so much". Do not be dismayed, though, because the amazing thing (freeing, really) is that we don't have to understand it. Words like 'rapture' and 'tribulation' come into play and illicit all sorts of opinions, but at the literal end of things, it all has pointed to the promise and assurance of God's ultimate victory over evil and the redemption for believers. That's the part we should fully understand and embrace with our whole lives.