"The Endurance of Faith"?

MoronI chapter 3 1:-3 [BOM}
“The manner in which the disciples, who were called the elders of the church, ordained priests and teachers, after they had prayed unto the Father in the name of Christ, they laid there hands upon them and said: In the name of Jesus Christ I ordain you to be a priest, or, if he be a teacher, I ordain you to be a teacher, to preach repentance and remission of sins through Jesus Christ, by the endurance of Fatif on his name to the end. Amen.”
The Book of Moroni, we’re there folks, coming to the end. It’s a cheap shot, but seriously, Moroni? Is that Latin plural for moron? I feel as if Joseph smith was just mocking his followers with that one, a not so hidden joke or something. Oh, well.
See the problem I have with this text is that, well, where are these priests? Of course with Mormon’s all the kids knocking at your door are priests, they all get “ordained” to priesthood somewhere around 12 or thirteen, though there are several levels of priesthoods. But that does not seem to have any correlation to the priests Moroni is talking about, which seem to be men set aside for special duties, which is why not all are “ordained” to be priests, but some others are ordained to be teachers.
But I have more trouble with this “endurance of faith” concept. What is that? Faith I get. But scripture talks about faith as a gift given, and through it sins are forgiven, remitted as it takes hold of the death and resurrection of Jesus Christ. And there is talk of enduring to the end etc. however, the forgiveness of sins is never predicated on the idea that you have to endure to the end. The forgiveness of sins is always talked about as a reality that is now. Jesus forgives you now. He does not wait for you to prove yourself to him. Faith isn’t like that. It isn’t something we do. It is something done to us.