Why do Protestants, Roman Catholics, and Eastern Orthodox, all using the same Bible, sometimes misunderstand each other?

For example, when Protestants speak of Salvation, they are almost always actually referring to the Biblical doctrine of "Justification". When Roman Catholics and especially Eastern Orthodox speak of Salvation, they are almost always actually referring to the Biblical doctrine of "Sanctification". These are two different aspects (or "parts") of our total Salvation in Christ, which we all agree comes to us by God's grace through Christ's Death on the Cross and Resurrection (Atonement). Often, difficulty over the interpretation of a verse of Scripture can be solved by merely continuing to read the next verse or verses following (along with the previous verse or verses). Here are two very important and basic methods of Scripture interpretation (Hermeneutics). Letting Scripture itself interpret Scripture by letting clear verses add light to those not so immediately clear; and always reading a Scripture in context (along with the preceding and following verses). We all know that non- ...  more