For no prophecy was ever produced by the will of man, but men spoke from God as they were carried along by the Holy Spirit.
But holy men of God spake as they were moved by the Holy Ghost. They did not of themselves, or according to their own will, foolishly deliver their own inventions. The meaning is, that the beginning of right knowledge is to give that credit to the holy prophets which is due to God.
In these words the apostle lays down another argument to prove the truth and reality of the gospel, and intimates that this second proof is more strong and convincing than the former, and more unanswerably makes out that the doctrine of the power and coming of our Lord Jesus Christ is not a mere fable or cunning contrivance of men, but the wise and wonderful...
Commenting on 2 Peter 1:19-21
For the prophecy,.... The whole Scripture, all the prophetic writings; so the Jews call the Scriptures "the prophecy" (g), by way of eminence, and from the subject matter of the sacred word: came not in old time by the will of man; was not brought into the world at first, or in any period of time, as and when man would, according to his pleasure...