Sorry about my temper but i have told peole a million times to see the previous links and they just won't.
I asume you mean the Gospel Duplication trick? It is used to...well...duplicate!
to use it do the fallowing.
You may have realised that when you beat Gospel that you keep all the chips and zenny you acquired on the way to him but that you restarted where you last saved, not in the room with gospel. However you problobly did not notice that the game does not save the other actions you did, such as completing ONB request, and collecting chip data. You can take advantige of this by doing as fallows...
-Decide what you want to duplicat, and for this we will use the guy who gives you 100,000 zenny for a "catcher H(?)".
- Save the game JUST befor you talk to the man who gives you the money.
-talk to him
-do not save!!!
-Go defeat Gospel (the one in the apartment not the one on the net)
-You shold restart infront of the man, but he will not have given you the money...or has he?
-Check your Zenny, and it should be 100,00 higher.
- Save the game
-Talk to him again
-He'll give you 100,000 more!
-This is because the game saves the items you recieve, but not the action you take. This can be done with things such as Blue Mstery data aswell.
dont call me BS...:P