There are some brilliant comments from some of you. Profound comments, even. But you must be careful about over-thinking things. Doctrine is not to be understood as an academic or scholarly undertaking. (Remember the chapter in Eighteen Verses on Moroni 10: 5.)
It is supposed to be understood in the doing. (John 7: 17.) When you have done it, as Nephi has, then you will be able to explain the doctrine. To attempt to have a command of the doctrine without having done the will of the Father is to always be left without understanding. It is also not necessary to be able to fully expound the doctrine before doing it. It is necessary to take action consistent with the invitation offered to you.
Your mind can work at cross purposes. Remember the chapter on “Becoming as a Child” in The Second Comforter. In order to go forward you must go back. Simplicity is at the heart of God’s offer to commune with you.