I got this from
http://www.cultinformation.org.uk/
They define a cult as...
1. It uses psychological coercion to recruit, indoctrinate and retain its members;
2. It forms an elitist totalitarian society;
3. Its founder leader is self-appointed, dogmatic, messianic, not accountable and has charisma;
4. It believes 'the end justifies the means' in order to solicit funds and recruit people;
5. Its wealth does not benefit its members or society.
All of the above can be attributed to the Abrahamic religions, particularly numbers 1, 2, 3, 4 and 5...