The following, then, are the explicit lessons brought out in the text of the Suprema haec sacra:
(1) The teaching that there is no salvation outside the Catholic Church is a dogma of the Catholic faith.
(2) This dogma has always been taught, and will always be taught, infallibly by the Church’s magisterium.
(3) The dogma must be understood and explained as the Church’s magisterium understands and explains it.
(4) The Church is necessary for salvation with both a necessity of precept and a necessity of means.
(5) Because the Church is necessary for salvation with the necessity of precept, any person who knows the Church to have been divinely instituted by Our Lord and yet refuses to enter it or to remain within it cannot attain eternal salvation.
(6) The Church is a general and necessary means for salvation, not by reason of any intrinsic necessity, but only by God’s own institution, that is, because God in His merciful wisdom has established it as such.
(7) In order that a man may be saved “within” the Church, it is not always necessary that he belong to the Church in re, actually as a member, but it can sometimes be enough that he belong to it as one who desires or wills to be in it. In other words, it is possible for one who belongs to the Church only in desire or in voto to be saved.
It is possible for this desire of entering the Church to be effective, not only when it is explicit, but also (when the person is invincibly ignorant of the true Church) even when that desire or votum is merely implicit.
(9) The Mystici Corporis reproved both the error of those who teach the impossibility of salvation for those who have only an implicit desire of entering the Church, and the false doctrine of those who claim that men may find salvation equally in every religion.
(10) No desire to enter the Church can be effective for salvation unless it is enlightened by supernatural faith and animated or motivated by perfect charity.