“Peter is the classic example of how the power of conversion works on receptive souls. During our Lord’s mortal ministry, Peter had a testimony, born of the Spirit, of the divinity of Christ and of the great plan of salvation which was in Christ. ‘Thou art the Christ, the Son of the living God,’ he said, as the Holy Ghost gave him utterance. (Matt. 16:13–19.) When others fell away, Peter stood forth with the apostolic assurance, ‘We believe and are sure that thou art that Christ, the Son of the living God.’ (John 6:69.) Peter knew, and his knowledge came by revelation.
“But Peter was not converted, because he had not become a new creature of the Holy Ghost. Rather, long after Peter had gained a testimony, and on the very night Jesus was arrested, he said to Peter: ‘When thou art converted, strengthen thy brethren.’ (Luke 22:32.) Immediately thereafter, and regardless of his testimony, Peter denied that he knew Christ. (Luke 22:54–62.) After the crucifixion, Peter went fishing, only to be called back to the ministry by the risen Lord. (John 21:1–17.) Finally on the day of Pentecost the promised spiritual endowment was received; Peter and all the faithful disciples became new creatures of the Holy Ghost; they were truly converted; and their subsequent achievements manifest the fixity of their conversions. (Acts 3; 4.)” (Mormon Doctrine, 2nd ed. [1966], 162–63).
“In order to strengthen his brethren—to nourish and lead the flock of God—this man who had followed Jesus for three years, who had been given the authority of the holy apostleship, who had been a valiant teacher and testifier of the Christian gospel, and whose testimony had caused the Master to declare him blessed still had to be ‘converted.’
“Jesus’ challenge shows that the conversion He required for those who would enter the kingdom of heaven (see Matt. 18:3) was far more than just being converted to testify to the truthfulness of the gospel. To testify is to know and to declare. The gospel challenges us to be ‘converted,’ which requires us to do and to become. If any of us relies solely upon our knowledge and testimony of the gospel, we are in the same position as the blessed but still unfinished Apostles whom Jesus challenged to be ‘converted.’ We all know someone who has a strong testimony but does not act upon it so as to be converted. …
“Now is the time for each of us to work toward our personal conversion, toward becoming what our Heavenly Father desires us to become” (“The Challenge to Become,” Ensign, Nov. 2000, 33).
“You cannot lift another soul until you are standing on higher ground than he is. You must be sure, if you would rescue the man, that you yourself are setting the example of what you would have him be” (“Stand Ye in Holy Places,” Ensign, Oct. 2008, 47).
“We must forgive and bear no malice toward those who offend us. The Savior set the example from the cross: ‘Father, forgive them; for they know not what they do’ (Luke 23:34). We do not know the hearts of those who offend us” (“That We May Be One,” Ensign, May 1998, 68).
“When someone has hurt us or those we care about, that pain can almost be overwhelming. It can feel as if the pain or the injustice is the most important thing in the world and that we have no choice but to seek vengeance. But Christ, the Prince of Peace, teaches us a better way. It can be very difficult to forgive someone the harm they’ve done us, but when we do, we open ourselves up to a better future. No longer does someone else’s wrongdoing control our course. When we forgive others, it frees us to choose how we will live our own lives. Forgiveness means that problems of the past no longer dictate our destinies, and we can focus on the future with God’s love in our hearts” (“Forgiveness Will Change Bitterness to Love,” Ensign or Liahona, May 2003, 12).
“It was not physical pain, nor mental anguish alone, that caused Him to suffer such torture as to produce an extrusion of blood from every pore; but a spiritual agony of soul such as only God was capable of experiencing. No other man, however great his powers of physical or mental endurance, could have suffered so; for his human organism would have succumbed, … [producing] unconsciousness and welcome oblivion. In that hour of anguish Christ met and overcame all the horrors that Satan, ‘the prince of this world’ could inflict” (Jesus the Christ, 3rd ed. [1916], 613).
“Peter, affirming his loyalty, his determination, his resolution, said that he would never deny. But the fear of men came upon him and the weakness of his flesh overtook him, and under the pressure of accusation, his resolution crumbled. …
“As I have read this account my heart goes out to Peter. So many of us are so much like him. We pledge our loyalty; we affirm our determination to be of good courage; we declare, sometimes even publicly, that come what may we will do the right thing, that we will stand for the right cause, that we will be true to ourselves and to others.
“Then the pressures begin to build. Sometimes these are social pressures. Sometimes they are personal appetites. Sometimes they are false ambitions. There is a weakening of the will. There is a softening of discipline. There is capitulation. And then there is remorse, self-accusation, and bitter tears of regret. …
“… Recognizing his error, repenting of his weakness, [Peter] turned about and became a mighty voice in bearing witness of the risen Lord. He, the senior apostle, dedicated the remainder of his life to testifying of the mission, the death, and the resurrection of Jesus Christ, the living Son of the living God. …
“… These mighty works and many more unmentioned were done by Peter who once had denied and sorrowed, and then rose above that remorse to carry forward the work of the Savior. …
“Now, if there be any … who by word or act have denied the faith, I pray that you may draw comfort and resolution from the example of Peter who, though he had walked daily with Jesus, in an hour of extremity denied both the Lord and the testimony which he carried in his own heart. But he rose above this, and became a mighty defender and a powerful advocate. So too, there is a way for you to turn about, and add your strength and faith to the strength and faith of others in building the kingdom of God” (“And Peter Went Out and Wept Bitterly,” Ensign, May 1979, 65–67).