His purpose is “to gather them for battle.” It is not that the world’s nations are intrinsically bloodthirsty so as to gather for battle at any excuse; it is rather that Satan will deceive them into thinking that this battle is necessary and worth the effort.
8 and will come out to deceive the nations that are at the four corners of the earth, Gog and Magog, to gather them for battle; their number is like the sand of the sea.