THE IMPORTANCE OF TEACHING OF CHRIST
In chapter 2 of 2 Nephi we learn something remarkable about Nephi's younger brother Jacob: He had seen Jesus Christ personally in a vision--when he was very young!
"Nevertheless, Jacob, my firstborn in the wilderness, thou knowest the greatness of God...Wherefore, I know that thou art redeemed, because of the righteousness of thy Redeemer; for thou hast beheld that in the fulness of time he cometh to bring salvation unto men. And thou hast beheld in thy youth his glory; wherefore thou art blessed even as they unto whom he shall minister in the flesh." (2 Ne. 2:2-4)
It's interesting that even though Jacob had seen the Lord himself, his father Lehi still wanted to teach him about Jesus Christ.
"Wherefore, redemption cometh in and through the Holy Messiah; for he is full of grace and truth. Behold, he offereth himself a sacrifice for sin, to answer the ends of the law, unto all those who have a broken heart and a contrite spirit; and unto none else can the ends of the law be answered." (2 Ne. 2:6-7)
And here we find the reason why Lehi taught someone who already knew--to make sure that that someone understood how important it was to teach others:
"Wherefore, how great the importance to make these things known unto the inhabitants of the earth, that they may know that there is no flesh that can dwell in the presence of God, save it be through the merits, and mercy, and grace of the Holy Messiah, who layeth down his life according to the flesh, and taketh it again by the power of the Spirit, that he may bring to pass the resurrection of the dead, being the first that should rise.
"Wherefore, he is the firstfruits unto God, inasmuch as he shall make intercession for all the children of men; and they that believe in him shall be saved." (2 Ne. 2:8-9)
Jacob took the lesson to heart, and later wrote,
"For this intent have we written these things, that [our beloved brethren and our children] may know that we knew of Christ, and we had a hope of his glory many hundred years before his coming; and not only we ourselves had a hope of his glory, but also all the holy prophets which were before us." (Jacob 4:4)
RESURRECTED TO PERFECTION
As we pass through this mortal life, we receive wounds, we become ill, our bodies age, we get gray hair and stiff joints. We slowly deteriorate from the day of our birth until the day we die. But dying is not the end but the beginning, because Christ provided the way for us to be resurrected to perfection.
"...And thou shalt be called by a new name, which the mouth of the Lord shall name. Thou shalt also be a crown of glory in the hand of the Lord, and a royal diadem in the hand of thy God." (Isaiah 62:2)
Returning to our opening scripture, we can see that even the great prophet Jacob, despite his righteousness, despite personally seeing Jesus Christ in vision, despite later enduring to the end, fell short and could only be saved the same way we will: through the atonement.
"Nevertheless, Jacob, my firstborn in the wilderness, thou knowest the greatness of God...Wherefore, I know that thou art redeemed, because of the righteousness of thy Redeemer."
As Christ, then, retained his scars so we could see proof that He remembers us always, we would be wise to remember those scars as well and daily and hourly make choices of obedience and repentance that will bring us greater spiritual progression, until that final day when Christ reaches out His hand and we feel those scars for ourselves.
As Lehi counseled,
"And now, my sons, I would that ye should look to the great Mediator, and hearken unto his great commandments; and be faithful unto his words, and choose eternal life, according to the will of his Holy Spirit." (2 Ne. 2:28).
If we do so, at the end of our lives we can say, as did Lehi,
"I have chosen the good part." (2 Ne. 2:30)
(For more on agency, see my Young Women's lesson, "Forks in the Road," available at this link.)
(For the wonderful talk by Brad Wilcox mentioned in the reader's comment below, "His Grace is Sufficient," follow this link.)