He predicted the coming of the Apocalypse to take place 13 years before or after the year 2000. Since it didn't happen in 1987, if Nostradamus is right, it will occur in 2013. It is said that this is NOT the end of the world, but the war that MIGHT end the world. The Apocalypse is said to bring (among other things) the resurrection of Kain, the second coming of Jesus Christ, and the return of Merlin.