"Thus this text also strongly opposes all human doctrine; for since the Word of God is the light in a dark and gloomy place, the conclusion follows that all besides it is darkness. For if there were another light besides the Word, Peter would not have spoken as he did. Therefore look not to how gifted with reason they are who teach any other doctrine--however grandly they set it forth. If you cannot trace God's Word in it, then doubt not that it is mere darkness. And let it not disturb you at all that they say they have the Holy Spirit. How can they have God's Spirit if they do not have His Word? Wherefore they do nothing else but call darkness light and make the light darkness, as the prophet Isaiah says, in Isaiah 5:20."
Martin Luther, Commentary on Peter and Jude, ed. John N. Lenker, Grand Rapids: Kregel Publications, 1990, p. 248. 2 Peter 1:19.
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: Knowing this first, that no prophecy of the scripture is of any private interpretation. 2 Peter 1:19-20, KJV.
