Plain and simple. It seems this doctrine, and passage is quite clear. I have repented, I believe in Christ, and have been baptized, so under Christ's doctrine in the Book of Mormon, I will inherit the kingdom of God, and have a nice place in the Celestial Kingdom. Most Latter-day Saints will disagree with me. This seems to point to the idea that Latter-day Saints have possibly added to the doctrine of Salvation that Jesus made so redundantly clear in 3 Nephi 11.
Lets take a look at what lds.org says about exaltation, or the highest degree of salvation.
To be exalted, we first must place our faith in Jesus Christ and then endure in that faith to the end of our lives. Our faith in him must be such that we repent of our sins and obey his commandments. 2.We must receive the laying on of hands for the gift of the Holy Ghost. 3.We must receive the temple endowment. 4.We must be married for time and eternity.