2 Peter 1:19 We have also a more sure word of prophecy; whereunto ye do well to take heed, as into a light that shineth in a dark place, until the day dawn, and the day star arise in your hearts.
The sure word of prophecy is like a light shining in a dark place. One dark place is in the heart and mind of sinful flesh. We don’t even realize how dark it is inside our own souls until the Light (the Word, Jesus) shines there. We have gotten used to the darkness and think that’s the way it is. The word is Jesus, the light of life, which “shines in the darkness, and the darkness has not overcome it.” The analogy is easy to see, for we know what happens when we turn on a flashlight, flip a switch, or watch a sunrise. The darkness runs away for it really has no power to overcome the light. So it is in the soul when Jesus (the Word, the Light) enters and penetrates the soul. Sin and evil flee away quickly.
Another dark place is the world in which we live. The dark world reinforces the inward sinful flesh tempting us to sin easily. But Christians are the light of the world. If we could see, we would see ”points of light” penetrating a dark world and pushing back the darkness of sin and evil.
The promise for us is this: the day will dawn and the day star will arise in our hearts every day. The day star is Jesus. The day star is the sun, the brightest light we know of. And just as surely as the sun will rise every morning and push away the darkness, so surely will Christ arise in our hearts, forgive our sins, shine the light, and give us new life. The Day Star greets us when we awake. Waking to a new day reminds us to repent anew and believe the gospel afresh. Then the ”sun of righteousness shall rise with healing in its wings [Malachi 4:2]” That’s a promise.