Here is a thought that occurred to me today when reading the lectionary reading from Romans 2.1-11, which I know I inherited from elsewhere (perhaps the article a link to at the bottom, though I read it a very long time ago):

It is one thing to say that the Bible teaches that justification is by faith alone or begins with faith and continues through works.  And, it is quite another thing to say that a person must understand the relationship between faith and works in order to be justified.  It seems that part of the reason the New Testament authors had to write to Christians about this relationship is that they didn’t all understand it.

Thus, I think NT Wright is absolutely correct to call this a second-order doctrine. Thoughts?