“Of one thing we have perfect assurance—the last thing wanted by those who demand signs is signs; the last thing wanted by those who demand evidence is evidence. A world of signs and evidences would not soften their hearts. The leaders of the Jews sought signs and Christ gave them signs sufficient to convince any people, yet they rejected him (see 2 Nephi 10:4)” (McConkie and Millet, Doctrinal Commentary, 3:113).
President Spencer W. Kimball wrote eloquently about trials and suffering:
“If we looked at mortality as the whole of existence, then pain, sorrow, failure, and short life would be calamity. But if we look upon life as an eternal thing stretching far into the premortal past and on into the eternal post-death future, then all happenings may be put in proper perspective.
“Is there not wisdom in his giving us trials that we might rise above them, responsibilities that we might achieve, work to harden our muscles, sorrows to try our souls? Are we not exposed to temptations to test our strength, sickness that we might learn patience, death that we might be immortalized and glorified?
“If all the sick for whom we pray were healed, if all the righteous were protected and the wicked destroyed, the whole program of the Father would be annulled and the basic principle of the gospel, free agency, would be ended. No man would have to live by faith.
“If joy and peace and rewards were instantaneously given the doer of good, there could be no evil—all would do good but not because of the rightness of doing good. There would be no test of strength, no development of character, no growth of powers, no free agency, only satanic controls.
“Should all prayers be immediately answered according to our selfish desires and our limited understanding, then there would be little or no suffering, sorrow, disappointment, or even death, and if these were not, there would also be no joy, success, resurrection, nor eternal life and godhood” (Spencer W. Kimball [manual], 15.)