Kurin, Block's wife, is reading from the Book of Revelations, the same passage that started the movie and details the ending of the world. I actually read a great book called Kingdom Come by Alex Ross about Superman and other DC comics heroes a few years ago and it references this passage fairly frequently, and even ties in with the last part that Kurin reads about the world-ending comet named "Wormwood". There's a secretary of defense in Kingdom Come named Wormwood, and in the book he's the one that gives the order to use nuclear weapons against rogue supers and nearly dooms the world to a holocaust. It's just a little strange to be connecting Superman to a 1957 black-and-white by way of the Book of Revelations.
So in the movie Death finally comes for Block, having won the chess game and ready to collect the souls of the crusader knight, Jons his squire, Lisa and the blacksmith Plogg, the mute girl, and finally Kurin, the knight's wife, who gets a REALLY raw deal in that she just met her husband for the first time in over 10 years and she has to die anyway. Joff and Mia have escaped however, and with their son Michael (the son "for which all things will be possible" according to Joff at the start of the movie, and an obvious Christ allegory) make their way into the sunset.