There are many commandments, and disobeying any one of these commandments means that we have broken God’s law, become unclean, and are unable to dwell with God. It is as though we have become “guilty of all” (James 2:10) because the result is the same: separation from God (see 1 Nephi 10:21).
From these verses, we can learn the following doctrine: If we commit even one sin, we become guilty before God.
Even though our disobedience makes us unclean, we can still have hope. President Dieter F. Uchtdorf of the First Presidency taught how we can be made clean again:
“The grace of God is our great and everlasting hope.“Through the sacrifice of Jesus Christ, the plan of mercy appeases the demands of justice [see Alma 42:15] ‘and [brings] about means unto men that they may have faith unto repentance’ [Alma 34:15].“Our sins, though they may be as scarlet, can become white as snow [see Isaiah 1:18]. Because our beloved Savior ‘gave himself a ransom for all’ [1 Timothy 2:6], an entrance into His everlasting kingdom is provided unto us [see 2 Peter 1:11].“The gate is unlocked!” (“The Gift of Grace,” Ensign or Liahona, May 2015, 108).
What do we need to do to become clean through the Atonement of Jesus Christ so that we may enter the Lord’s kingdom?
The process of overcoming our weaknesses and becoming clean and pure through the Savior’s Atonement is accomplished by striving to be a little better each day. Becoming like the Savior should be the quest we follow throughout our entire life.
James 2:11 contains an example of James’s teaching in verse 10, emphasizing that breaking any of God’s commandments makes us sinners. In James 2:12–13 he encouraged the believers to be merciful in the way they treat people because if they treat others without mercy, they also will be judged without mercy.
What good does it do to claim to have faith and have no works.
What I learn from this verse is that all commandments are important. We can't just do the ones we like or are good at. They all apply.
