Just to clarify, Roman Catholic tradition is that the magisterium as the only determiners of Scriptural interpretation. It is not the individual ministers, but the magisterium.
Their view is that Sola Scriptura is
1) not taught in the Bible
2) circular reasoning
3) has, as its natural conclusion, the fragmentation of the church into thousands of separate groups or denominations.

Hmm, maybe they are right with the many thousand different Protestant denominations?

Grace is not common.