It does not mean that non-Catholics cannot achieve salvation.
Individuals who are unaware that the Catholic Church is the one, true Church may still achieve salvation through the merits of the Church, despite their lack of knowledge. In An Emergency, Anyone Can Baptize – Although the ordinary ministers of Baptism are bishops, priests and deacons, anyone can baptize in an emergency, even a non-baptized person.
A little known, but easily documented fact is that the books of the Bible were compiled by the Catholic Church.
For many years after Christ ascended into Heaven, there was debate about which scriptural writings were inspired by God.
More than simply Catholic trivia, these are important concepts that can help us to better understand and defend our beliefs.