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19And we have the word of prophecy [made] more sure; whereunto ye do well that ye take heed, as unto a lamp shining in a dark place, until the day dawn, and the day-star arise in your hearts: 20knowing this first, that no prophecy of scripture is of private interpretation. 21For no prophecy ever came by the will of man: but men spake from God, being moved by the Holy Spirit.
2 Peter 1:19-21 (ASV)