2 Peter 1:20

“Knowing this first, etc.] Especially, and in the first place, this is to be known, observed, and considered; that no prophecy of the Scripture, that is contained in Scripture, be it what it will, is of any private interpretation: not that this is levelled against the right of private judgment of Scripture; or to be understood as if a private believer had not a right of reading, searching, examining, and judging, and interpreting the Scriptures himself, by virtue of the unction which teacheth all things; and who, as a spiritual man, judgeth all things; otherwise, why are such commended as doing well, by taking heed to prophecy, in the preceding verse, and this given as a reason to encourage…”

“"Forasmuch as ye know this" (Pe1 1:18). first--the foremost consideration in studying the word of prophecy. Laying it down as a first principle never to be lost sight of. is--Greek, not the simple verb, to be, but to begin to be, "proves to be," "becometh." No prophecy is found to be the result of "private (the mere individual writer's uninspired) interpretation" (solution), and so origination. The Greek noun epilusis, does not mean in itself origination; but that which the sacred writer could not always fully interpret, though being the speaker or writer (as Pe1 1:10-12 implies), was plainly not of his own, but of God's disclosure, origination, and inspiration, as Peter proceeds to add,…”

“Knowing this first - Bearing this steadily in mind as a primary and most important truth. That no prophecy of the Scripture - No prophecy contained in the inspired records. The word “scripture” here shows that the apostle referred particularly to the prophecies recorded in the Old Testament. The remark which he makes about prophecy is general, though it is designed to bear on a particular class of the prophecies. Is of any private interpretation - The expression here used (ἰδίας ἐπιλύσεως idias epiluseōs) has given rise to as great a diversity of interpretation, and to as much discussion, as perhaps any phrase in the New Testament; and to the present time there is no general agreement…”

“Ye do well, as knowing this, that no scripture prophecy is of private interpretation - It is not any man's own word. It is God, not the prophet himself, who thereby interprets things till then unknown. 2 Peter 1:21”

“1:20-21 came from the prophet’s own understanding (or is a matter of one’s own interpretation): The point is probably that the prophets were not left on their own to interpret the visions that God gave them. God made the meaning clear to the prophets, so that they could prophesy clearly and reliably.”

“Knowing: Pe2 3:3; Rom 6:6, Rom 13:11; Ti1 1:9; Jam 1:3 that: Rom 12:6 2 Peter 1:21”