The reason magnets work is to do with Einstein's Theory of Special Relativity.
magnets/relativity - wikipedia
I saw a thing in a Martin Gardner book which could be used in a mentalism trick/mental card effect. The idea actually made use of Quantum Mechanics. An interesting idea might be a show where you do some tricks - then teach how the tricks are done - and teach the science behind the tricks. Perhaps that is what Science Magic is? I am guessing a similar thing happens in Gospel Magic. You do a trick and then talk about how it a metaphor for a wider moral/religious teaching...
Waaay off topic - apologies! BTW The Quantum Mechanics thingy can be found in the following book:
Martin Gardner Book
What is more relevent about the book above is that it contained a very clever self-contained levitation of a paperclip (which could be kept on permanent display). It makes use of a jam jar, a magnet, some sticky tape and some invisible thread. You should work it out from that...