I couldn't again rep you yet, but I wanted to let you know I'm attempting to have a very real conversation apart from the typical adversarial and condescending format of Catholic v. Protestant.  My questions are a genuine search for the Catholic position in detail according to the Greek terminology, not just a general concept of sin.  I simply don't recall if Aquinas addressed it to this degree or not.  Or maybe there are others to consider.  There is NO "tone" in my posts, as I have genuine respect and love for you as a brother in Christ, and I'm weary of the anti-Catholic sentiments in the manner they're usually posted.