Mammon is a concept in religion that basically sums down to an excessive love of material wealth, often to the point of worshipping it as a false idol - although largely symbolic Mammon has been viewed as a sentient vaguely humanlike and/or demonic personification of greed: he is often seen as a type of fertility god that people worship within the country of Syria in ancient times, taking the "love of money" to its logical extreme (i.e. the worship of money).
Mammon may actually of been an actual deity at some point in pre-Christianity, like many demons of scripture (such as Baal and Moloch) but either degenerated into a false idol and demon with the advent of Christianity. Originally, Jesus Christ spoke of this Aramaic term in one of his sermons when he says "ye cannot serve 2 masters, God and mammon".
- In John Milton's epic poem Paradise Lost, Mammon was a fallen angel, described as being "more interested in heaven's pavements," than the leader. He tells the other fallen angels to be content in Hell.
- The Phantom of the Opera worships Mammon in Frederick Forsyth's The Phantom of Manhattan.