Elliot's purpose as a missionary is to share the message of Jesus Christ, as contained in both the Bible and the Book of Mormon. Preach My Gospel teaches:
The testimony of the Book of Mormon confirms the testimony of the Bible that Jesus is the Only Begotten Son of God and the Savior of the world. As you teach the fulness of the gospel of Jesus Christ, you will testify often about the Savior and Redeemer of the world. By the power of the Holy Ghost, you will add your living witness of the truthfulness of this message.
Please enjoy the video. And if you'd like to receive a free copy of the Book of Mormon, you can order one here. You can also receive a free copy of the Bible here.