19  And he commanded them that they should teach nothing save it were the things which he had taught, and which had been spoken by the mouth of the holy prophets.

  12  And again, the elders, priests and teachers of this church shall ^bteach the principles of my gospel, which are in the Bible and the Book of Mormon, in the which is the fulness of the gospel.

  36  Let them labor with their families, ^adeclaring none other things than the prophets and apostles, that which they have seen and heard and most assuredly believe, that the prophecies may be fulfilled.