Brigham teaches that if one were to receive a revelation, but it is not "to be known by the people at the present," one should keep it a secret.
Brigham Young, "Our Relatives, Those Who Do the Will of God—The Elders Should Be As Fathers and Shepherds in Israel, and not As Masters-Self-Confidence, and the Way to Obtain It—The Prophet Joseph not Yet Resurrected—Preaching to the Spirits in Prison, Etc.," March 15, 1857, Journal of Discourses, 26 vols. (Liverpool: S.W. Richards, 1857), 4:288
Should you receive a vision of revelation from the Almighty, one that the Lord gave you concerning yourselves, or this people, but which you are not to reveal on account of your not being the proper person, or because it ought not to be known by the people at present, you should shut it up and seal it as close, and lock it as tight as heaven is to you, and make it as secret as the grave. The Lord has no confidence in those who reveal secrets, for He cannot safely reveal Himself to such persons.