Nephi now stresses that he has given his people the sum total of the doctrine of Christ—all they will receive until the Messiah comes in the flesh. The law of Moses will govern them until then. Then the Messiah will issue new instructions that people entering into the covenant “shall… observe to do.”
What is this “doctrine of Christ”? For Nephi, it consists of the covenant, witnessed by baptism, the gift of the Holy Ghost, and personal revelation through the Holy Ghost.