“And so we have the prophetic word confirmed, which you do well to heed as a light that shines in a dark place, until the day dawns and the morning star rises in your hearts.”
Peter now continues with an implication of his Mount of Transfiguration experience. He draws an even more convincing documentation of truth than the transfiguration.
we have the prophetic word confirmed
The Word of God is surer than an apostolic witness of the account of Mount of Transfiguration. Our faith primarily rests in what God says, not what we experience.
The “prophetic word” pertains to inspired utterances – prophetic [of the prophets]. In other words, this is Old Testament Scripture.
Ro 16: 26 “But now has been made manifest, and by the prophetic Scriptures has been made known to all nations, according to the commandment of the everlasting God, for obedience to the faith— 27 to God, alone wise, be glory through Jesus Christ forever. Amen.”
“Confirmed” means firm, permanent. “Confirmed” comes to mean reliable, dependable, certain. These are people with a firm faith because what they believe in is altogether reliable. We can rely and depend upon the Scriptures because they are trustworthy.
We can trust God’s Word more than we can trust our own senses.
We can trust the empirical evidence of the trio seeing the transfiguration. We can trust even more the message of the prophets, the Word of God. The issue here is an issue of certainty. Scriptures are known to be true by the apostles; they are certain (He 2:2). There has been a process of verification by the apostles and they confirmed the Bible to be true by a verification process well established.