Peter next returned to the subject of God's promises (v. 4). He developed the importance of the Scriptures as the resource of the believer. He did so to enable his readers to appreciate their value and to motivate them to draw upon them so they would grow in grace.
"These verses make it obvious that Peter's primary concern in this epistle is not to refute the false teachers but to ground his readers in personal holiness."56
1:12 In view of what he had written to this point, Peter explained that he realized his previous words were a reminder to his readers, not new instruction. Verses 3-11 contain basic Christian life truth. His readers had heard this previously, but they, as all believers, needed a reminder of it periodically so they would not forget (v. 9).
"We must not glide lightly over Peter's concern about reminding the readers of already known and familiar truth. The history of the Church as a whole shows how careless the Church can be about clinging to divine revelation. So bad have things become in our own day, that the truth of justification by faith alone and of salvation as a free gift has already been submerged and lost among many evangelicals. The Reformation almost needs to occur again!"57
1:13-14 Peter's earthly dwelling (lit. tent) was his physical body (cf. 2 Cor. 5:1, 4). The Greek word apothesismeans "a divesting,"and it refers elsewhere to removing clothes (cf. Acts 7:58). We do not know exactly how Peter knew someone would separate his mortal body from his spirit soon. Peter's words allow the possibility of separation by death or translation. Both events were imminent: overhanging. He was probably at least in his 50s, if not older, when he wrote 2 Peter, and he may have known that he would die as a martyr soon. The Lord Jesus had told Peter that he would end his earthly life as a captive of some kind (John 21:18-19).
1:15 Peter wrote this epistle so that after his death his exhortation contained in it would be a permanent reminder to his brethren. It was his "testament"(cf. 2 Tim.). Whether Peter realized God was inspiring this epistle or not, he regarded it as containing very important and helpful information for Christians. We believe God did inspire it and consequently what Peter said of the value of this letter applies to the rest of Scripture as well. We too need reminders of what God has revealed. Mark's Gospel may also have been in Peter's mind when he wrote this.58There is good evidence that Peter's preaching formed the basis of the second Gospel.
