(Isa. 28:10, 13; refer in this text to 2 Ne. 27:6–11)
The Lord gives us revelation; as we accept and live by that revelation, we are given more revelation, but if we do not accept what is revealed, we lose the knowledge we have already gained.
(Monte S. Nyman, Great Are the Words of Isaiah [Salt Lake City: Bookcraft, 1980], 102.)
Some people get impatient because the Lord hasn’t revealed more than He has—unmindful of the fact that He already has revealed more than we are able to digest, in most cases.
(Harold B. Lee, The Teachings of Harold B. Lee, ed. Clyde J. Williams [Salt Lake City: Bookcraft, 1996], 424.)
How many have read the Book of Mormon through? How many have made themselves familiar with the things revealed to us in the Doctrine and Covenants regarding what the Lord has said of our duties as members of the Church and what he has said regarding our salvation and exaltation and how it may be obtained? Until we are prepared to receive the things already given. I fear the Lord will hold from us those other things which one time will be revealed. (D&C 59:4; 101:32–34.) …
When we, the members of the Church, reach the point that we are willing to live by all that the Lord has revealed, he will give us more that can be placed in the Doctrine and Covenants. The Lord is withholding from us great and mighty truths because of the hardness of our hearts. Why should we clamor for more when we will not abide in what we already have? We are led by revelation today just as much as they were anciently.
(Joseph Fielding Smith, Doctrines of Salvation: Sermons and Writings of Joseph Fielding Smith, ed. Bruce R. McConkie, 3 vols. [Salt Lake City: Bookcraft, 1954–1956], 3:202.)