Elder M. Russell Ballard of the Quorum of the Twelve Apostles taught that a willingness to perform Alma’s experiment leads to conversion:
“We know that both members and nonmembers are more likely to be thoroughly converted to the gospel of Jesus Christ when they are willing to experiment upon the word (see Alma 32:27). This is an attitude of both mind and heart that includes a desire to know the truth and a willingness to act on that desire. For those investigating the Church, the experiment can be as simple as agreeing to read the Book of Mormon, to pray about it, and to earnestly seek to know if Joseph Smith was the Lord’s prophet.
“True conversion comes through the power of the Spirit. When the Spirit touches the heart, hearts are changed. When individuals, both members and investigators, feel the Spirit working with them, or when they see the evidence of the Lord’s love and mercy in their lives, they are edified and strengthened spiritually, and their faith in Him increases. These experiences with the Spirit follow naturally when a person is willing to experiment upon the word. This is how we come to feel the gospel is true” (in Conference Report, Oct. 2000, 97; or Ensign, Nov. 2000, 75).
At times the swelling motions, the enlarging of souls, the enlightening of understanding, and the beginning of delicious feelings from the Spirit spoken of in Alma 32:28 are difficult to verbally express. However, being hard to express does not discount the truthfulness of the feeling.
President Boyd K. Packer, President of the Quorum of the Twelve Apostles, shared an experience that describes the difficulty of verbal expression. He bore his testimony to an atheist that there is a God. The man said he could not know such a thing. President Packer compared his testimony and knowledge with knowing what salt tastes like (see commentary for Alma 30:15–16 on page 214; see also “The Candle of the Lord,” Ensign, Jan. 1983, 51–52).