“We have also a more sure word of prophecy; whereunto ye do well that ye take heed, as unto a light that shineth in a dark place, until the day dawn, and the day star arise in your hearts:”
King James Version (KJV)
1:19 And we - St. Peter here speaks in the name of all Christians. Have the word of prophecy - The words of Moses, Isaiah, and all the prophets, are one and the same word, every way consistent with itself. St. Peter does not cite any particular passage, but speaks of their entire testimony. More confirmed - By that display of his glorious majesty. To which word ye do well that ye take heed, as to a lamp which shone in a dark place - Wherein there was neither light nor window. Such anciently was the whole world, except that little spot where this lamp shone. Till the day should dawn - Till the full light of the gospel should break through the darkness. As is the difference between the light of a lamp and that of the day, such is that between the light of the Old Testament and of the New. And the morning star - Jesus Christ, #Rev 22:16|. Arise in your hearts - Be revealed in you.
2Pe 1:19 We have also a more sure word of prophecy. Prophecy was a sure word, but when fulfilled in Christ and the gospel it seemed more sure. No class of evidence had more power with Jews than to show them that Jesus was the Christ of whom the prophets spoke. Whereunto. To prophecy. Ye do well that ye take heed. Heed its predictions and statements concerning Christ. As unto a light that shineth in a dark place. It was a lamp shining in the darkness of the past and giving some light before the day star arose. Until the day dawn. The full light of the New Testament. And the day-star arise. Christ. See Re 22:16.