As representatives of the Savior, you and I have the ongoing responsibility to work diligently and to implant in our hearts and minds the fundamental doctrines and principles of the restored gospel, especially from the Book of Mormon. As we do so, the promised blessing is that the Holy Ghost will “bring all things to [our] remembrance” (John 14:26) and empower us as we teach and testify. But, elders and sisters, the Spirit can work with and through us only if we give Him something with which to work. He cannot help us remember things we have not learned.
This work is never about me and it is never about you. We need to do all in our power to fulfill our missionary responsibility and simultaneously “get out of the way” so the Holy Ghost can perform His sacred function and work. In fact, anything you or I do as representatives of the Savior that knowingly and intentionally draws attention to self—in the messages we present, in the methods we use, or in our personal demeanor and appearance—is a form of priestcraft that inhibits the teaching effectiveness of the Holy Ghost.
Preach My Gospel missionaries know we do not teach lessons; we teach people. We do not merely recite or present memorized messages about gospel topics. We invite seekers of truth to experience the mighty change of heart. We understand that talking and telling alone are not teaching.
Quotes taken from Elder Bednar...Becoming a Preach My Gospel Missionary