Doctrine and Covenants 20 teaches us about the relationship between grace and agency. Jesus Christ suffered so that we could be saved. We can choose to accept that gift (justification) and retain it over time (sanctification). Baptism enables us to accept it. The sacrament helps us retain it.
Endless
Book of Mormon authors use the phrase "endless torment" to describe the suffering from which God has delivered us. The Lord encouraged Martin Harris to think of this suffering as enormous, not unending. With this context, "endless punishment" means God's punishment, or in other words, the punishment God willingly suffered on our behalf.
Preface to Four Revelations, April-May 1829
Four revelations received by Joseph Smith on behalf of different people have nearly identical openings. These openings are derived from combinations of biblical passages, all of which appear in some form in the Book of Mormon. Here is how I would paraphrase the message of this recurring introduction: Big things are about to happen, so pay close attention to what I'm about to say: People are ready to hear the gospel and if you work hard, you will find success in sharing it. I will answer your prayers, so ask me for help.
A Job Description for Servants of God
Doctrine and Covenants 4 reads like a job description. It states the need, the expectations, the compensation, and two lists of qualifications. We don't need all of those qualifications to get started. With God's help, we can develop them as we serve.
Moroni’s Collaborative Conclusion
Moroni draws heavily on the writings of his precessors in his concluding remarks. This collaboration with prior prophets enhances the power of his message and helps us to see "how merciful the Lord hath been." in all ages of the world.
What Do You Delight In?
Mormon said his people "delighted in everything save that which is good." When we delight in something, we immerse ourselves in it and savor it. So what delights you, and how can you adjust your actions and attitudes to be more delighted by good things?
Prepare to Be Judged
Nobody likes to be judged, but Book of Mormon prophets clearly emphasize the Final Judgment. Mormon pleads with us to "repent and prepare to stand before the judgment-seat of Christ." We prepare by changing for the better, with God's help, every day.
Anti-Christ, Anti-Repentance
Korihor was "Anti-Christ" because he denied the existence of Christ. He also denied the reality of sin, but he actually knew better. He later said, "I always knew that there was a God." Deception is contrary to our nature. Our Father is a God of truth.
The Plan of Salvation
God has a fabulous plan for us. Book of Mormon prophets call it by various titles, including the plan of happiness, the plan of redemption, and the plan of salvation. As Patrick Kearon observed, these titles remind us that God intends to save us.
The Joy of the Saints
Enos prayed all day long because of his father's words about "the joy of the saints." He must have detected a gap between that description and his own experience. God created us to be joyful, and His gospel can bring the greatest happiness into our lives.