दिसग्री विथ में?

I was thinking the other day about how there seems to be three kinds of disagreements (more or less). 1. Between Christians: ex. dress in church, style of worship, baptism by immersion, Calvinistis or Arminians, etc. 2. Between Christians and the unsaved (athiests, Mormons, JW's, etc). 3. Between Christians and heretics (also unsaved): ex. Paul controversy, errancy, etc. How we approach talking with these people will differ, based upon their presuppositions. I feel like I need to know a LOT more than I do now. Okay, so enough rambling....but seriously, apologetics is like my fifth favorite word. :)