2 Nephi 2

If you were on your dying bed, what would be your last words to your children. For me, it would be "choose the right". Why? Because it is the very difference between happiness, joy, and peace and misery, pain, and sorrow. The words of the song are -

Choose the right when a choice is placed before you.
In the right the Holy Spirit guides;
And its light is forever shining o'er you,
When in the right your heart confides.

Choose the right! Choose the right!
Let wisdom mark the way before.
In its light, choose the right!
And God will bless you evermore.

Choose the right! Let no spirit of digression
Overcome you in the evil hour.
There's the right and the wrong to ev'ry question;
Be safe thru inspiration's pow'r.

Choose the right! There is peace in righteous doing.
Choose the right! There's safety for the soul
Choose the right in all labors you're pursuing;
Let God and heaven be your goal.

As he neared death, Lehi taught his son, Jacob -

"For it must needs be, that there is an opposition in all things. If not so, my first–born in the wilderness, righteousness could not be brought to pass, neither wickedness, neither holiness nor misery, neither good nor bad..." (Book of Mormon 2 Nephi 2:11)

"...I speak unto you these things for your profit and learning; for there is a God, and he hath created all things, both the heavens and the earth, and all things that in them are, both things to act and things to be acted upon.
15 And to bring about his eternal purposes in the end of man...it must needs be that there was an opposition...
16 Wherefore, the Lord God gave unto man that he should act for himself. Wherefore, man could not act for himself save it should be that he was enticed by the one or the other." (Book of Mormon 2 Nephi 2:14 - 16)

And after explaining the fall of Adam, Lehi tells his sons -

"...Adam fell that men might be; and men are, that they might have joy.
26 And the Messiah cometh in the fulness of time, that he may redeem the children of men from the fall. And because that they are redeemed from the fall they have become free forever, knowing good from evil; to act for themselves and not to be acted upon, save it be by the punishment of the law at the great and last day, according to the commandments which God hath given.
27 Wherefore, men are free according to the flesh; and all things are given them which are expedient unto man. And they are free to choose liberty and eternal life, through the great Mediator of all men, or to choose captivity and death, according to the captivity and power of the devil; for he seeketh that all men might be miserable like unto himself.
(Book of Mormon 2 Nephi 2:25 - 27)

I too would want to plead with my son as Lehi did saying -

"...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;
29 And not choose eternal death, according to the will of the flesh and the evil which is therein, which giveth the spirit of the devil power to captivate, to bring you down to hell, that he may reign over you in his own kingdom. (Book of Mormon 2 Nephi 2:28 - 29)

For it is the very difference between happiness, joy, and peace and misery, pain, and sorrow.