As my favorite is Justification and so I went there and I read Apol XII:
60] When the adversaries speak of faith, and say that it precedes repentance, they understand by faith, not that which justifies, but that which, in a general way, believes that God exists, that punishments have been threatened to the wicked [that there is a hell], etc. In addition to this faith we require that each one believe that his sins are remitted to him. Concerning this special faith we are disputing, and we oppose it to the opinion which bids us trust not in the promise of Christ, but in the opus operatum of contrition, confession, and satisfactions, etc. This faith follows terrors in such a manner as to overcome them, and render the conscience pacified. To this faith we ascribe justification and regeneration, inasmuch as it frees from terrors, and brings forth in the heart not only peace and joy, but also a new life. We maintain [with the help of God we shall defend to eternity and against all the gates of hell] that this faith is truly necessary for the remission of sins, and accordingly place it among the parts of repentance. Nor does the Church of Christ believe otherwise, although our adversaries [like mad dogs] contradict us.
I got to the bolded words and I got reminded of what Pieper said...
"I would eliminate faith as a requirement that makes justification true. That would be making faith a work of mine." Franz August Otto Pieper, A Final Word, http://www.franzpieper.com/
I am confused. I do not know about you, but Pieper has a lot of explaining to do.