New Defender's Study Bible Notes
3:2 words which were spoken. Peter would remind us here again of “the more sure word of prophecy” to which we should “take heed” (II Peter 1:19). The words “spoken before by the holy prophets” are simply the Old Testament Scriptures.
3:2 commandment of us. The teachings of “the apostles of the Lord and Saviour” were largely known by verbal transition to the churches of Peter’s day, although they probably had seen some of Paul’s epistles (note II Peter 3:15,16) and possibly also had access to Mark’s gospel account (note I Peter 5:13). In any case, these have all now been collected and recognized as the New Testament Scriptures. Peter is, therefore, urging us to stir up our minds by both the Old Testament and New Testament Scriptures, for this will be more and more important as the world’s rebellion against God intensifies and the coming of the Lord draws near. This very same theme was emphasized by Paul in his last epistle, just before his death, especially in his own closing exhortations (II Timothy 2–4).