Good Omens by Neil Gaiman
Neil Gaiman and Terry Pratchett’s Good Omens sees the long foretold coming of the Antichrist, which is a big problem, not just for all the people caught in the way of Armageddon, but for the angel Aziraphale, and the demon Crowley, Heaven and Hell’s representatives on the mortal plane. Both have grown rather accustomed to the comforts of the world, and, scheming together, they hatch a plot to stop the end of the world.