“Just three years earlier these very men had been fishing on this very sea. On that occasion too they had ‘toiled all the night, and [had] taken nothing’ [Luke 5:5], the scripture says. But a fellow Galilean on the shore had called out to them to let down their nets, and they drew ‘a great multitude of fishes’ [Luke 5:6], enough that their nets broke, the catch filling two boats so heavily they had begun to sink.
“Now it was happening again” (“The First Great Commandment,” Ensign or Liahona, Nov. 2012, 84).
“Jesus responded (and here again I acknowledge my nonscriptural elaboration), perhaps saying something like: ‘Then Peter, why are you here? Why are we back on this same shore, by these same nets, having this same conversation? Wasn’t it obvious then and isn’t it obvious now that if I want fish, I can get fish? What I need, Peter, are disciples—and I need them forever. I need someone to feed my sheep and save my lambs. I need someone to preach my gospel and defend my faith. I need someone who loves me, truly, truly loves me, and loves what our Father in Heaven has commissioned me to do. … So, Peter, for the second and presumably the last time, I am asking you to leave all this and to go teach and testify, labor and serve loyally until the day in which they will do to you exactly what they did to me’” (“The First Great Commandment,” 84).
“This is the call of Christ to every Christian today: ‘Feed my lambs. … Feed my sheep’—share my gospel with young and old, lifting, blessing, comforting, encouraging, and building them, especially those who think and believe differently than we do” (“Being a More Christian Christian,” Ensign or Liahona, Nov. 2012, 91).
“My beloved brothers and sisters, I am not certain just what our experience will be on Judgment Day, but I will be very surprised if at some point in that conversation, God does not ask us exactly what Christ asked Peter: ‘Did you love me?’” (“The First Great Commandment,” 84).
“Earlier in His earthly ministry, the Savior had said, ‘There be some standing here, which shall not taste of death, till they see the Son of man coming in his kingdom’ (Matthew 16:28). The resurrected Christ foretold that John would be one who would fulfill that prophecy and ‘tarry’ on earth until He came again (see John 21:22–23). A more complete account of this conversation between the Savior, Peter, and John is found in Doctrine and Covenants, section 7, which is ‘a translated version of the record made on parchment by John and hidden up by himself’ (D&C 7, section introduction). This revelation clarifies that John asked the Savior for ‘power over death, that I may live and bring souls unto thee,’ and in response, the Savior granted John power to live until His Second Coming (see D&C 7:1–3). John thus became a ‘translated’ being. Such beings are ‘changed so that they do not experience pain or death until their resurrection to immortality’ (Guide to the Scriptures, ‘Translated Beings’; scriptures.lds.org). For more information on translated beings, see 3 Nephi 28:4–40, which affirms that three Nephite disciples experienced the same change undergone by John (see 3 Nephi 28:6)” (New Testament Student Manual [Church Educational System manual, 2014], 271).
The Prophet Joseph Smith taught in June 1831 that John was at that time ministering among the lost ten tribes (see History of the Church,1:176). Besides this statement, we do not know the specifics of John’s ministry as a translated being. It is unwise to speculate about John’s whereabouts or achievements.