Mormons trust a lie, because they believe without question the lies told by a film-flam man , who dreamed up the whole "Oh hey I found a new Bible" story as a means to earn some free cash, and also a way to convince younger girls into his bed too....
Thus Mormons have no works to go along with their faith.
Faith without works is a dead.
This is why Mormons have a "dead faith" for they lack the only work that Jesus said must be, and that is to believe in the true Son.
Lacking this work, the Mormons and their "Dead faith" are unforgiven and thus when they die are condemned to the fire of Hell...