This is a post I made on a thread over at ChristianWriters.Com -- thought it might make a good post here, all by itself.
That's the problem with Protestantism -- we've been conditioned to believe that the believer who doesn't believe like us is "wrong." Maybe gravely wrong. Every denomination (and non-denominational church) was founded because no other denomination or church was doing it totally "right" (in doctrine or practice or worship style or ... ) -- otherwise our denomination (or non-denominational church) would not have been necessary.
I think that this "everybody else is wrong" mentality cripples our fellowship -- we can't seem to get it in our head that it's OK for other believers to not be like us, and not "get" what we're about, and for us to not "get" them.
If we Christians want to make a mark on this world, we need to give our brothers and sisters who don't believe and practice and express like us the grace to not believe and practice and express like us. Maybe we could even bless them in their different belief and practice and expression. Now that would be a radical expression of love.