With 10,000 interpretations of Scripture I really don't think that it is profitable to quote Scripture because it is often quoted out of context and by the prejudices of the reader/interpreter. We believe that the Church received the Holy Spirit on Pentacost and has guided the church for over 2000 yrs.
I get caught up with it like everyone else but our faith rests on the belief that the Spirit which Jesus promised truly arrived and abides in the church. Therefore, if we leave out Tradition and Magisterium, to explain our belief, whether someone else believes it or not., we are at fault. We have a rich history to draw from.