Jesus is not talking about denominational, theological or interpretational divisions. He is talking about divisions within a Jewish family where some become Christians and the others don't.
Luke 12:51 Do you think that I have come to give peace on earth? No, I tell you, but rather division; 52 for henceforth in one house there will be five divided, three against two and two against three; 53 they will be divided, father against son and son against father, mother against daughter and daughter against her mother, mother-in-law against her daughter-in-law and daughter-in-law against her mother-in-law.
So Catholics are too sinful to be Christians, is that what you are saying?
There is no boasting exclusivity with God. Where does that fallacy come from? It seems you want to add cement to the wall of division with an "us v.s. them" mentality.
If the unity of Christians was meant to convince the world that Jesus was sent by God, what does the ever-increasing fragmentation of Protestantism in general say to the world?
Since each “bible-only” Christian must admit that his or her interpretation is fallible, how can they in good conscience call anything heresy or bind another Christian to a particular belief? You can't. Making excuses and inventing the "Invisible Church" theory isn't working.
The only thing you guys can agree on is how wrong we are.
We have a whole commission dedicated to promoting Christian unity. Where is yours?