2 Corinthians 1

As Alma was teaching the people of Gideon, he taught a profound doctrine of Christ, saying that -

"...he shall go forth, suffering pains and afflictions and temptations of every kind; and this that the word might be fulfilled which saith he will take upon him the pains and the sicknesses of his people.
12 And he will take upon him death, that he may loose the bands of death which bind his people; and he will take upon him their infirmities, that his bowels may be filled with mercy, according to the flesh..." (Book of Mormon | Alma 7:11 - 12)

Many believe that His atonement was only to take upon Hims our sins, but it is apparent that the Savior took on a great deal more. But then Alma teaches an important reason, "why" -

"...that he may know according to the flesh how to succor his people according to their infirmities." (Book of Mormon | Alma 7:12)

It is very difficult for man to understand and know how to succor another in his infirmities, unless you've walked in his same shoes. In Christ's situation, there is no suffering, pain, tribulation, or imfirmaties that he has not experienced Himself.

Paul suggest the same type of logic to the Corinthians where -

"Blessed be God, even the Father of our Lord Jesus Christ, the Father of mercies, and the God of all comfort;
4 Who comforteth us in all our tribulation..." (New Testament | 2 Corinthians 1:3 - 4)

Paul then teaches us that we are to do the same having experienced tribulation -

"...that we may be able to comfort them which are in any trouble, by the comfort wherewith we ourselves are comforted of God." (New Testament | 2 Corinthians 1:4)

In other words, by the same logic taught by Alma having ourselved experienced tribulation -

"...of which in the smallest, yea, even in the least degree you have tasted..." (Doctrine and Covenants | Section 19:20)

...we are to "succor his people according to their infirmities"