Grace is the saving power of the atonement of Jesus Christ; it is the power of mercy satisfying the demands of justice. As the great missionary Amulek stated:
8 And now, behold, I will testify unto you of myself that these things are true. Behold, I say unto you, that I do know that Christ shall come among the children of men, to take upon him the transgressions of his people, and that he shall atone for the sins of the world; for the Lord God hath spoken it.
9 For it is expedient that an atonement should be made; for according to the great plan of the Eternal God there must be an atonement made, or else all mankind must unavoidably perish; yea, all are hardened; yea, all are fallen and are lost, and must perish except it be through the atonement which it is expedient should be made.
10 For it is expedient that there should be a great and last sacrifice; yea, not a sacrifice of man, neither of beast, neither of any manner of fowl; for it shall not be a human sacrifice; but it must be an infinite and eternal sacrifice.
11 Now there is not any man that can sacrifice his own blood which will atone for the sins of another. Now, if a man murdereth, behold will our law, which is just, take the life of his brother? I say unto you, Nay.
12 But the law requireth the life of him who hath murdered; therefore there can be nothing which is short of an infinite atonement which will suffice for the sins of the world.
13 Therefore, it is expedient that there should be a great and last sacrifice, and then shall there be, or it is expedient there should be, a stop to the shedding of blood; then shall the law of Moses be fulfilled; yea, it shall be all fulfilled, every jot and tittle, and none shall have passed away.
14 And behold, this is the whole meaning of the law, every whit pointing to that great and last sacrifice; and that great and last sacrifice will be the Son of God, yea, infinite and eternal.
15 And thus he shall bring salvation to all those who shall believe on his name; this being the intent of this last sacrifice, to bring about the bowels of mercy, which overpowereth justice, and bringeth about means unto men that they may have faith unto repentance.
16 And thus mercy can satisfy the demands of justice, and encircles them in the arms of safety, while he that exercises no faith unto repentance is exposed to the whole law of the demands of justice; therefore only unto him that has faith unto repentance is brought about the great and eternal plan of redemption.
~Alma 34:8-16
There is nothing we can do of ourselves to be saved– this is not the nature of repentance. Repentance is not an act of power that we have of ourselves, but is the key to obtaining forgiveness. This is a gift that we must choose to accept through repentance, that is to say, we must have a "change of mind" and of self, in order for the atonement to change us– to allow Christ to touch our hearts. "Abide in me, and I in you. As the branch cannot bear fruit of itself, except it abide in the vine; no more can ye, except ye abide in me." John 15:4-5 ~ "Enter ye in at the strait gate: for wide is the gate, and broad is the way, that leadeth to destruction, and many there be which go in thereat: Because strait is the gate, and narrow is the way, which leadeth unto life…" Matthew 7:13-14
Some would argue that the very notion of choosing Christ, choosing to allow the cleansing power of the atonement to wash over us, with conscious effort on our part, is blasphemous. They know neither Christ, nor His doctrine. Covenants are at the very center of God's dealing with His people, with all of us. If one goes back to the words preceding the Bible's Old and New sections, we find the word testament: covenant.
Covenants are two-way promises that we make with our Father in heaven; promises that He will never, never break. Any transgression of those covenants will always be on our side, and must therefore be acknowledged and corrected in exercising of agency– to "turn" back to God– to repent. The first covenant, the first step, is through the "strait gate" and the "narrow way" as taught by the Savior: baptism; in His way and by His order.
The Lord's house is a house of order, and all things pertaining to it (the kingdom of God on Earth- the Church) must be done in His order and His way. The authority of God cannot be usurped, stolen, taken unto a man of himself, or even copied or imitated; it must be given, bestowed on a righteous man whom the Lord chooses. As Paul said in his epistle to the Hebrews: "And no man taketh this honour unto himself, but he that is called of God, as was Aaron."5:4 And also in the latter day we have the 5th article of faith which states: We believe that a man must be called of God, by prophecy, and by the laying on of hands by those who are in authority, to preach the Gospel and administer in the ordinances thereof. (emphasis added) And with this order comes revelation, the living oracles, the conduit by which God speaks His will and mind to man. Quoth Amos: "Surely the Lord God will do nothing, but he revealeth his secret unto his servants the prophets." 3:7
As before, mercy cannot negate justice. For every action there is an equal and opposite reaction- or as the Lord revealed to the prophet Joseph Smith, "There is a law, irrevocably decreed in heaven before the foundations of this world, upon which all blessings are predicated— And when we obtain any blessing from God, it is by obedience to that law upon which it is predicated." in other words: if we keep a commandment, we receive the blessing tied (decreed) to keeping it, and if we break that commandment, we do not receive the blessing- we cannot receive the blessing. The Lord's house is a house of order.
If we cannot make and keep covenants, we cannot be saved in the Kingdom of God, for no unclean thing can dwell in His presence.
So what? Are we– should we be resigned to a state of eternal lamenting and misery for the wrongs we have done? Are we to wallow in self-doubt that the power of the atonement cannot have place within us once we have sinned? No! If we believe, if we teach our children that they are to condemn or look upon themselves with loathing and disgust, we have indeed sinned against the greater light. The message of the gospel of Christ is a message of hope, of joy, of salvation. We must learn to separate the promptings- the temporary withdrawal of the Spirit- which lead us to repent, and back into the light of the Savior's love for us, and the filthy, degrading, and virulent enticements from Satan and his angels that: we are not worth saving; that we cannot return; that we are truly lost; the we have abjectly failed and cannot be raised back onto a path leading to our Savior.
These feelings, these thoughts and diabolic admonitions from the enemy, the father of lies, are precisely that: lies! I recently read a blog post from a woman who left the Church because she felt she was required to feel these types of feelings as part of her restitution and repentance. Now, I do not know the hearts of people– only the Lord does, and I cannot judge her for the decisions she's made. I, too, have felt those same feelings of self-loathing and inadequacy, and on what felt like every occasion that I had slipped on the path and as if there was no more light around me. What I was feeling was the echoing sound of victory from the adversary and his minions.
I sought help- priesthood and professional- in dealing with both the struggles and the feelings I felt as a result of transgressions. And though I still struggle at times, it has become easier for me to realize that I am of worth, that I am worth saving, and that all I must do is reach out and grasp the hand of my Savior, which will never be withdrawn. "Behold, I stand at the door, and knock: if any man hear my voice, and open the door, I will come in to him, and will sup with him, and he with me." Revelation 3:20 ~ "Draw near unto me and I will draw near unto you; seek me diligently and ye shall find me; ask, and ye shall receive; knock, and it shall be opened unto you." Doc&Cov 88:63
Again, grace is the power, the absolute power whereby which we are saved.
[Grace is] the enabling power from God that allows men and women to obtain blessings in this life and to gain eternal life and exaltation after they have exercised faith, repented, and given their best effort to keep the commandments. Such divine help or strength is given through the mercy and love of God. Every mortal person needs divine grace because of Adam’s fall and also because of man’s weaknesses. ~LDS Guide to the Scriptures