From a Hebraic Standpoint the “Doctrine of Christ” is rendered very different than the evangelical idea of “Believe in Jesus and you are saved”. The words in the Book of Mormon add a depth that is often missed in our western world:
“Behold, verily, verily, I say unto you, I will declare unto you my doctrine (lekha heb. teaching/instructions). And this is my doctrine (teaching), and it is the doctrine (teaching/instructions) which the Father hath given unto me; and I bear record of the Father, and the Father beareth record of me, and the Holy Ghost beareth record of the Father and me; and I bear record that the Father commandeth all men, everywhere, to repent and believe in me. And whoso believeth in me, and is baptized, the same shall be saved; and they are they who shall inherit the kingdom of God. And whoso believeth not in me, and is not baptized, shall be damned (gazar: decree or have a judgment against them). 3 Nephi 11:31-34
In a sense the doctrine or teaching of Christ is part of a legal decree with the Father and the Holy Ghost standing as affirmative witnesses. The key to the teaching is found in the words repent (tshuvah) and believe (aman). Tshuvah is much more than just stopping of a bad behavior or mindset. And Aman is much more than mental assent.
“Verily, verily, I say unto you, that this is my doctrine, and I bear record of it from the Father; and whoso believeth in me believeth in the Father also; and unto him will the Father bear record of me, for he will visit him with fire and with the Holy Ghost.” v. 35
The statement is part of a legally binding covenant proceeding and should not be taken out of context from the remainder of the text/account and the teachings presented by the Messiah. To do so creates a “doctrine/teaching” that isolated by itself does not represent the legal boundaries or heart of the covenant itself.
In other word, the real teaching/doctrine of Christ becomes neutered to a shallow, apostate, and modern born again Christian concept that is foreign to the Israelite peoples of the both the Book of Mormon and the Bible. It also perpetuates a twisted teaching in modern Christianity where the mindset regarding salvation and progression divides the people into camps of emotional children who have been sold a bill of goods based on emotion rather than covenant which is the foundation of the pure love of Christ in that it is fixed and immovable.