Strong G1992 ἐπιστολή epistolē · epistle

2 Peter

1. 2 Peter 3:1
   This second epistle, beloved, I now write unto you; in both which I stir up your pure minds by way of remembrance:
2. 2 Peter 3:16
   As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, unto their own destruction.