There are six major parallel Bible passages about future Babylon, which are Isaiah 13-14, Isaiah 47, the Book of Habakkuk, Isaiah 17-18, Jeremiah 50-51 and Revelation 15:1-20:6.  Babylon is referred to as a land, nation, or kingdom no less than a total of 80 times.  Where does it refer to it as a religion?  The answer - different extra-Biblical books.  This episode helps a person more clearly see these truths.