Concise Bible Dictionary:
The object of this epistle appears to be primarily the confirmation of the minds of Jewish believers in the certainty of the kingdom of the Lord Jesus Christ. We have in it the only record by an eye-witness of what took place on the Mount of Transfiguration. This vision made more sure the word of prophecy to which saints did well in taking heed, as to a light shining in a dark place, till the day dawned, and the day-star arose in their hearts.
But before the kingdom could be displayed, it was necessary that the corruption of Christianity, which had already set in, should be complete; and the course and climax of this corruption are vividly portrayed in 2 Peter 2. It originated in false teachers privily bringing in destructive heresies, denying the Lord that bought them. The development of this evil is viewed in the light of wickedness (rather than of apostasy, as in the Epistle of Jude), as that which is specially obnoxious to the government of God. While in Jude the gainsaying of Core is shown to be the culminating point of apostasy, here the incitement to abominable wickedness by Balaam is before the mind of the Spirit, indicating how corrupting the influence of those who held the place of “prophet” would become.
In the concluding part of the epistle (2 Peter 3) we have also the closing phase of unbelief (perhaps Jewish), namely, skepticism, built up on the assumed unchangeability of the creation, as to the coming of the day of the Lord. And this becomes the occasion of the apostle’s leading the minds of the saints beyond the thoughts of the kingdom to that which, resting on perfect moral foundations, is eternal and unchangeable. The day of the Lord was a means to an end, and would make way for the day of God, and the fulfillment of His promise of new heavens and a new earth, in which righteousness would reside, and in view of which the existing heavens and earth would pass away. Saints, knowing these things before, were not to fall from their steadfastness, but to grow in grace and in the knowledge of our Lord and Savior Jesus Christ.
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