Heidegger's Bible Handbook: 2 Peter: Inscription

3. It is inscribed to dispersed Jews.

That this second Epistle also was intended for the same people to whom the first Epistle was inscribed, is argued by the words of 2 Peter 3:1, ταύτην ἤδη, ἀγαπητοί, δευτέραν ὑμῖν γράφω ἐπιστολήν, this second epistle, beloved, I now write unto you. Also, that it was written to converted Jews, the words of 2 Peter 1:19 show, we have a more sure word of prophecy. For, the prophetic word came to the Jews, not to the Gentiles. The former, not the latter, had Moses and the Prophets, Luke 16:31; Romans 9:4. Nevertheless converted Gentiles, and so all Christians, are no less able able to make this Epistle their own.