From Calvin: "We have here a general description of the power of God, to show the Israelites that the God they worshipped was the same who made the world, and rules over all according to his will, neither is there any other besides him.
"...his glory, so far as was seen fit, has been sufficiently manifested, to leave all the world without excuse for ignorance. How can one who has enjoyed a sight of the heavens and of the earth shut his eyes so as to overlook the Author of them without sin of the deepest dye?"
Paul supports this in the book of Romans, when he tells us that we are without excuse because God has given enough evidence of himself in the creation.
This shining in our hearts is none other than the power of the Holy Spirit, which is what enables us to believe beyond a shadow of a doubt that the Bible we are reading is the authoritative Word of God. Without the benefit of the Holy Spirit, no one can believe this. Not only that, no one can understand it, either, without the Holy Spirit shining in our hearts.
However, what I want to focus on, though, is that when he shines in me, I should be shining on others. The light that is in my heart should be visible outwardly. Not, of course, literally looking like I'm lit up like a light bulb, but that there should be a visible difference in my countenance. This doesn't mean that I should go around grinning like an idiot all the time. But it does mean that I should always look like I have hope in my life. Because I do. Even when things seem hopeless, like they occasionally have in the past couple of weeks, I should be displaying hope. Because I do have hope. I have the hope of the Almighty God of the ages in my heart, shining through the power of the Holy Spirit with the "light of the knowledge of the glory of God in the face of Jesus Christ."
I praise you for the evidence of you that surrounds us in creation. I pray for the souls of those who are too depraved to notice or too busy to see it. Let me never become so wrapped up in myself or my own problems that I can't take a minute to see beauty. Especially YOUR beauty, because you are beautiful, Lord! Infinitely beautiful!
Grace and peace, friends.