Doctrines of Salvation 3:202; “Not all of the revelations given to the Prophet Joseph Smith are in the Doctrine and Covenants. He made a selection for this book by revelation. The Church has had many other revelations, but we have in the Doctrine and Covenants revelations sufficient to bring to pass our exaltation if we will but heed them.”

Luke 12:2-3; “For there is nothing covered, that shall not be revealed; neither hid, that shall not be known.  3 Therefore whatsoever ye have spoken in darkness shall be heard in the light; and that which ye have spoken in the ear in closets shall be proclaimed upon the housetops.”

If God has given you a word to proclaim to the people why wouldn’t you do what He wants you to do and let the people know?