You may not have realized it, but that is exactly where you went when you "agreed in part" with the verse I presented. You simply do not have the right to a predjudiced opinion about the beliefs of another Christian.I do not drift into philosophy.
We can argue and discuss our views for a better understanding of each other, but if either argues the other does not truly hold their belief then that person is a liar by default (by character). That is why we need to be careful how we deal with Christians we may disagree with.