Pratchett Terry. Good Omens (in English)

There is a distinct hint of Armageddon in the air. According to The Nice and Accurate Prophecies of Agnes Nutter, Witch, the world will end on a Saturday. Next Saturday, in fact. So the armies of Good and Evil are amassing, the Four Bikers of the Apocalypse are revving up their mighty hogs and hitting the road, and the world's last two remaining witch-finders are getting ready to fight the good fight.Except that a somewhat fussy angel and a fast-living demon -- each of whom has lived among Earth's mortals for many millennia and has grown rather fond of the lifestyle -- are not particularly looking forward to the coming Rapture. If Crowley and Aziraphale are going to stop it from happening, they've got to find and kill the Antichrist (which is a shame, as he's a really nice kid). There's just one glitch: someone seems to have misplaced him...