No Greater Witness

Moroni, son of Mormon, has received the compiled history of the Nephite people from his deceased father. Alone and hunted by the enemy that has wiped out the entire Nephite nation, Moroni spends precious time to record a final message to the future readers of the book he is charged to protect. In the remaining space on the gold plates, before he bears his final testimony of Jesus Christ, Moroni engraves these words:

And when ye shall receive these things, I would exhort you that ye would ask God, the Eternal Father, in the name of Christ, if these things are not true; and if ye shall ask with a sincere heart, with real intent, having faith in Christ, he will manifest the truth of it unto you, by the power of the Holy Ghost. And by the power of the Holy Ghost ye may know the truth of all things.
--Moroni 10:4-5

If Joseph Smith, the translator of the Book of Mormon, was a fraud, this promise of a witness from God would be the most audacious, outlandish, bold-faced lie ever perpetrated on the public. Joseph was either a lunatic or a prophet. 

The author of these words lays it all on the line. He invites us not to take his word for it nor to rely on the words of any other human. He says we should go to God and put it in His hands. He was confident of the outcome. 

Millions have put this promise to the test and have found it to be true. I have tested the Book of Mormon, and in answer to my sincere prayers, God has told me it is true. What greater witness do I need than from God?