Originally from here.

Each Commandment reminds them that God requires moral accountability. God isn’t first in the sinner’s affections. He embraces the god of his own imagination. He uses God’s name in vain. He violates the Sabbath by not setting aside one day in seven to rest and honor God. He dishonors his parents, harbors hatred and unjust anger, and burns with unlawful sexual desire (see Matthew 5:27–28 LSB, which says, “everyone who looks at a woman to lust for her has already committed adultery with her in his heart”). He has stolen, lied, and coveted—and yet he chooses to remain in sin. When the Bible says that the wages of sin is death, the Law is the paymaster (see Romans 2:12; James 2:12). It calls for his blood.

As surely as the plagues fell upon Egypt and finally brought about the death of the firstborn, so also the Law will fall upon sinners on Judgment Day. Jesus said it will grind them to powder (see Matthew 21:44). When something is ground to powder, a thorough job is done. And God will thoroughly judge the wickedness of every human being—perfect justice will be done.

Yet He is rich in mercy and provided a Savior in Jesus. We broke God’s Law—Jesus paid the fine. That means God can legally take death off us and let us live forever, all because of the death and resurrection of Jesus. All that is required of us is to repent and trust in Him. Repentance means to confess and forsake our sins. The Bible says, “Let everyone who names the name of Christ depart from iniquity” (2 Timothy 2:19). Jesus says to us as He said to the woman caught in adultery, “Go and sin no more” (John 8:11). And if we do sin, we have an Advocate in the presence of the Father. God promises that if we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness (1 John 1:9).