This epistle is addressed to "the strangers scattered abroad", i.e., to the Jews of the Dispersion (the Diaspora).
Its object is to confirm its readers in the doctrines they had been already taught. Peter has been called "the apostle of hope," because this epistle abounds with words of comfort and encouragement fitted to sustain a "lively hope." It contains about thirty-five references to the Old Testament.
It was written from Babylon, on the Euphrates, which was at this time one of the chief seats of Jewish learning, and a fitting centre for labour among the Jews. It has been noticed that in the beginning of his epistle Peter names the provinces of Asia Minor in the order in which they would naturally occur to one writing from Babylon. He counsels (1) to steadfastness and perseverance under persecution ( (1-2:10); ); (2) to the practical duties of a holy life ( (2:11-3:13); ); (3) he adduces the example of Christ and other motives to patience and holiness ( (3:14-4:19); ); and (4) concludes with counsels to pastors and people (ch. 5).
The external evidence of authenticity of this epistle is of the strongest kind and the internal is equally strong. It was addressed to the churches of Asia Minor which had for the most part been founded by Paul and his companions, Supposing it to have been written at Babylon, ( 1 Peter 5:13 ) it ia a probable conjecture that Silvanus, By whom it was transmitted to those churches, had joined Peter after a tour of visitation, and that his account of the condition of the Christians in those districts determined the apostle to write the epistle. (On the question of this epistle having been written at Babylon commentators differ. "Some refer it to the famous Babylon in Asia, which after its destruction was still inhabited by a Jewish colony; others refer it to Babylon in Egypt, now called Old Cairo; still others understand it mystically of heathen Rome, in which sense Babylon is certainly used in the Apocalypse of John." --Schaff.) The objects of the epistle were --
[E] indicates this entry was also found in Easton's Bible Dictionary