Mosiah 3: 7, Alma 7: 11-13

Jesus Christ took upon Himself my sins, pains, and infirmities

In Mosiah 3: 7, we read: 

"7 And lo, he shall suffer temptations, and pain of body, hunger, thirst, and fatigue, even more than man can suffer, except it be unto death; for behold, blood cometh from every pore, so great shall be his anguish for the wickedness and the abominations of his people." 

And in Alma 7: 11-13, we read: 

"11 And 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, that he may know according to the flesh how to succor his people according to their infirmities.

13 Now the Spirit knoweth all things; nevertheless the Son of God suffereth according to the flesh that he might take upon him the sins of his people, that he might blot out their transgressions according to the power of his deliverance; and now behold, this is the testimony which is in me."

And here's the commentary from the "Come, Follow Me" Manual entitled: "Jesus Christ took upon Himself my sins, pains, and infirmities.":

"The Bible clearly teaches that Jesus Christ atoned for our sins. The Book of Mormon expands our understanding of Christ’s sacrifice and suffering in important ways. You can find some of these teachings in Mosiah 3:7; 15:5–9; Alma 7:11–13. After you read these passages, consider recording what you discover in a chart like this one:

What did the Savior suffer?	Why did He suffer?	What does this mean to me?

Here’s another way to study these passages: Look for hymns that you feel match the messages they teach. The “Scriptures” index at the back of the hymnbook can help. What phrases from these hymns and the scriptures help you appreciate the Savior’s sacrifice more deeply?

See also Isaiah 53; Hebrews 4:14–16; Gérald Caussé, “A Living Witness of the Living Christ,” Ensign or Liahona, May 2020, 38–40."

Here is the chart with my answers to the three questions: 

What did the Savior suffer?	Why did He suffer?	What does this mean to me?
temptations, afflictions, pain of body, hunger, thirst, fatigue, sicknesses, death   infirmities according to the flesh or in all aspects of earthly life	that the word may be fulfilled which saith he will take upon him the pains and the sicknesses of his people,  to loose the bands of death that his bowels may be filled with mercy, according to the flesh, that he may know according to the flesh how to succor his people according to their infirmities that he might take upon him the sins of his people, that he might blot out their transgressions according to the power of his deliverance	My Savior carried all my pains so when I turn to Him during the times that I am in pain He will give me the strength that I need to be able to bear the pain I'm experiencing.  Victory over death is victory over all pain and all sorrow. He did it for me because I couldn't do it for myself. And because He did, complete happiness and joy became possible for me, my loved ones, and all of God's children.   Whenever I need support in every aspect of life, my Savior is always there for me. I can always count on Him.  My Savior loves me unconditionally. He suffered all things even the punishments for my own sins so that I don't have to be punished myself and will be clean and worthy to go back to God's presence and inherit eternal life if I do my part--repent of my own sins and do all I can to rise above my own challenges and reach my full potential as a child of God.

                                              

And here are the lyrics of an Easter hymn--been singing this myself because this is the one choir at church is singing this coming Easter Sunday:

That Easter Morn

That Easter morn a grave that burst

Proclaimed to men that Last and First;

Had ris'n again, 

And conquered pain.

Thus we in gratitude recall,

And give our love and pledge our all.

Shed grateful tear,

 And conquer fear. 

I love all the lyrics of this short hymn and the phrases that helped me appreciate the Savior's sacrifice more deeply are: "Had ris'n again, And conquered pain" and "And conquer fear". Because Jesus Christ "had risen again, and conquered pain", you and I--we  are able to "conquer fear" ourselves. "Be of good cheer; I have overcome the world." ( John 16: 33) He did overcome the world...so whatever we're going through we can choose to fear not and be happy.