I'll help here.
You look to your church for the assessment because your church says it has the assessment. The Church claims this right to assess based upon their interpretation of Scripture. How do you know they are right? You accept it by faith.
How do we know we have it right? Ultimately by faith - but in our case without the intermediary.
Not meaning to complicate things but it does depend on what you mean by faith.
If I understand your meaning correctly, I would say, 'no, not just by faith.'
I'm a free agent, Blogger. Born Protestant, raised in the Bible Belt.