Ok, so what you are actually saying Pax, is that the one source that infallibly teaches of the necessity of the sacrament, Trent, you cannot use to prove what you are saying. And that makes sense.
Not what i'm saying. BOD does not provide salvation. Nothing in Trent says so. Anyone who says otherwise (which is a lot of people) is wrong.
But can a formal,
catechumen (1), with a legitimate, true, and holy desire for baptism (which as Trent teaches,
includes sorrow for sins and repentance of life) obtain justification (i.e. remission of sins)? Yes, Trent does (indirectly) say so, in its schema on proper disposition for baptism.
(1) a catechumen, as defined by Trent is a person who:
a. Has totally, formally and openly rejected any prior religion and/or paganism.
b. Has openly and formally been taught (and believes in) the Incarnation, Trinity and Redemption.
c. Has openly been taught about the Church and baptism and understands, accepts and desires to enter the Catholic Faith, under the Pope, by way of baptism.
Errors:
Anyone who says that a person who does not fulfill the above 'catechumen' definition can still have BOD, is in error.
Anyone who says that such a non-catechumen can be justified by desire, is in error.
Anyone who says that a non-catechumen who still *identifies* (and also who has not rejected) a false religion (or atheism) can be justified, is a quasi-heretic, per Trent.