Mammon and Beelzebub help the antagonist of this work, who uses his power of deceit and turns into a snake, allowing him to tempt one character into eating a fruit of the tree of knowledge.  
One character in this work, Mulciber, builds the abode of the antagonist.  In this work, the angel Michael gives one character a vision of the future, while Raphael earlier explains to the same character the origins of the world.  Mammon and Beelzebub help the antagonist of this work, who uses his power of deceit and turns into a snake, allowing him to tempt one character into eating a fruit of the tree of knowledge.  Adam and Eve are thus expelled from the Garden of Eden in, for 10 points, which epic poem by John Milton?
One character in this work, Mulciber, builds the abode of the antagonist.  
{Paradise} Lost