Excellent article/booklet taking an in depth look at the practical implications of obedience to Jesus.    

Some of the most obvious answers to this question are discussed in this article, although none of them can be trusted or applied universally… except the last one… and even with that, there will be those who question its reliability.

Disagreements happen everywhere; but how we deal with them makes all the differences.  Ironically, non-Christian organisations often use the solution that Jesus instructed his followers to use, more than do most churches!