"The Words of the Lord," spoken by His servants, "will all be fulfilled." For the Lord says: "I am He Who speaketh,")
"Verily, verily, I say unto you, that My people shall know My Name; yea, in that day they shall know that I am He that doth speak." (III Nephi 20:39)
"And he that believeth not My words believeth not My Disciples; and if it so be that I do not speak, judge ye; for ye shall know that it is I that speaketh, at the last day." (Mormon 8:22)