Galations 2 & 6

It appears Paul is quite frustrated with the faithfulness of Galatians to the gospel of Jesus Christ as he asks -

"...Received ye the Spirit by the works of the law, or by the hearing of faith?" (New Testament Galatians 3:2)

It appears that the saints were falling back on the Mosaic law which was fulfilled with the atonement of the Savior. Before "the law" was given, Paul teaches that the gospel of Jesus Christ had been taught to Abraham and -

"...as Abraham believed God, and it was accounted to him for righteousness." (New Testament Galatians 3:6)

Believing God, being righteous, or faithful requires a man to be firm in adherance to the promises and covenants he makes -

"And the scripture, foreseeing that God would justify the heathen through faith, preached before the gospel unto Abraham, saying, In thee shall all nations be blessed.
9 So then they which be of faith are blessed with faithful Abraham." (New Testament Galatians 3:8 - 9)

Even to the point -

"...that they which are of faith, the same are the children of Abraham." (New Testament Galatians 3:7)

What a great promise to all that are faithful. Paul teaches an important doctrine as he writes -

"...that no man is justified by the law in the sight of God..." (New Testament Galatians 3:11)

Websters dictionary defines "justification" as -

"...the act, process, or state of being justified by God..."

It is through the atonement of Jesus Christ that justice is satisfied whereby we are justified for -

"...men are instructed sufficiently that they know good from evil. And the law is given unto men. And by the law no flesh is justified; or, by the law men are cut off. Yea, by the temporal law they were cut off; and also, by the spiritual law they perish from that which is good, and become miserable forever.
6 Wherefore, redemption cometh in and through the Holy Messiah; for he is full of grace and truth.
7 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.
8 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..." (Book of Mormon 2 Nephi 2:5 - 8)

That is why -

"...we labor diligently to write, to persuade our children, and also our brethren, to believe in Christ, and to be reconciled to God; for we know that it is by grace that we are saved, after all we can do." (Book of Mormon 2 Nephi 25:23)

It is only when we do all we can that we reap the blessings we sow. Let us -

"Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap.
8 For he that soweth to his flesh shall of the flesh reap corruption; but he that soweth to the Spirit shall of the Spirit reap life everlasting." (New Testament Galatians 6:7 - 8)

So therefore -

"...let us not be weary in well doing: for in due season we shall reap, if we faint not." (New Testament Galatians 6:9)

And as we do, we are saved by grace and -

"And if ye be Christ's, then are ye Abraham's seed, and heirs according to the promise." (New Testament Galatians 3:29)