Every human being born has the ability to save their soul, it is the Will of God that all people save their soul.
God gives grace somehow to whoever He pleases, and the problem with the Dimond followers is simple this, they are so full of Pride, just because they don't understand how God could possible save a Jєω, they prefer to condemn.
Good advice, call CMRI and ask them, or are you afraid you won't like the answer, it might make sense to you and you will have to change for the better.
CMRI teaches NO SALVATION OUTSIDE THE CHURCH, but the Church is not exclusive to only the Dimonds.