President Wilford Woodruff:

President Wilford Woodruff

The Bible, the Book of Mormon, the Book of Doctrine and Covenants contain the words of eternal life unto this generation, and they will rise in judgment against those who reject them. (In Journal of Discourses, 22:335)

President Brigham Young:

President Brigham Young

The Old and New Testaments, the Book of Mormon, and the Book of Doctrine and Covenants … are like a lighthouse in the ocean, or a finger-post which points out the road we should travel. Where do they point? To the fountain of light. … That is what these books are for. They are of God; they are valuable and necessary: by them we can establish the doctrine of Christ. (In Journal of Discourses 8:129)

President Spencer W. Kimball:

President Spencer W. Kimball

I find that all I need to do to increase my love for my Maker and the gospel and the Church and my brethren is to read the scriptures. I have spent many hours in the scriptures. … I prescribe that for the people who are in trouble. I cannot see how anyone can read the scriptures and not develop a testimony of their divinity and of the work of the Lord, who is the spokesman in the scriptures. …

I find that when I get casual in my relationships with divinity and when it seems that no divine ear is listening and no divine voice is speaking, that I am far, far away. If I immerse myself in the scriptures the distance narrows and the spirituality returns. I find myself loving more intensely those whom I must love with all my heart and mind and strength, and loving them more, I find it easier to abide their counsel. (The Teachings of Spencer W. Kimball, edited by Edward L. Kimball [Salt Lake City: Bookcraft, 1982], p. 135)

President Heber J. Grant:

President Heber J. Grant

All my life I have been finding additional evidences that the Bible is the Book of books, and that the Book of Mormon is the greatest witness for the truth of the Bible that has ever been published. (“The President Speaks: Excerpts from the Utterances of Heber J. Grant,” Improvement Era November 1936, p. 660)