Because the Savior has been “touched with the feeling of our infirmities,” he can fully comprehend our trials.

It was necessary, when the Savior was upon the earth, that he should be tempted in all points, like unto us, and “be touched with the feeling of our infirmities,” [Hebrews 4:15] to comprehend the weaknesses and strength, the perfections and imperfections of poor fallen human nature.  And having accomplished the thing he came into the world to do; having had to grapple with the hypocrisy, corruption, weakness, and imbecility of man; having met with temptation and trial in all its various forms, and overcome; he has become a “faithful high priest” [Hebrews 2:17] to intercede for us in the everlasting kingdom of his Father.

He knows how to estimate and put a proper value upon human nature, for he, having been placed in the same position as we are, knows how to bear with our weaknesses and infirmities, and can fully comprehend the depth, power, and strength of the afflictions and trials that men have to cope with in this world.  And thus understandingly and by experience, he can bear with them.

John Taylor (1808 – 1887), third President of The Church of Jesus Christ of Latter-day Saints