If you’ve ever wanted a psalm to identify all the virtues of the law, Psalm 119 would be it. One of the virtues extolled in this acrostic (alphabetic) psalm is that the law gives light. It’s the unfolding light of understanding. When the beauty and effectiveness of the law are examined and applied, well, this inspection opens up a whole new understanding. God’s words in Scripture, unfolded and explained, give light.
Truth be told, I sometimes get a little sad at not preaching anymore. For a while, I was preaching every week instead of listening to someone else do it. It’s one of the tragic flaws of ministry that when one is gifted for preaching/teaching, it’s kind of tough to listen to other people do it. Even pulpit pastors who can hit the target within the first 20 minutes of trying still present the pew-preacher (kind of like an armchair quarterback) with plenty of opportunity to second guess, act as an analyst, and generally spend the time drifting into how they would present it differently, or maybe better.
We’re supposed to be listening for learning. To have that unfolding light, the light of understanding impact our lives. After all, the whole point of listening to a sermon is to have it open the Word to understanding, right?
God desires we listen, we learn, and that the exposition and preaching of His Word will give us light of understanding!
Fun Fact of Light: The Chandra X-Ray Observatory at Harvard tells this story about X-rays and the ability to see through to details otherwise invisible to the naked eye.
“A new form of radiation was discovered in 1895 by Wilhelm Roentgen, a German physicist. He called it X-radiation to denote its unknown nature. This mysterious radiation had the ability to pass through many materials that absorb visible light. X-rays also have the ability to knock electrons loose from atoms. Over the years these exceptional properties have made X-rays useful in many fields, such as medicine and research into the nature of the atom. Eventually, X-rays were found to be another form of light.”
There’s something mysterious about X-rays, especially for writers of science fiction stories or superhero comics. In them, X-ray vision is usually an ability to see through solid objects at the selective choice of the one having this superpower (e.g. notable and iconic Superman of DC Comics).
According to Chad Orzel, physics contributor at Forbes who was enjoying exposing the notion of X-ray vision,
“Medical X-ray images aren’t made by focusing light to make an image, they’re made by putting the detector directly behind the target and blasting x-rays at it. Really, they are just the shadows cast by stuff in front of them, like one of those photosensitive walls you see at science museums.”
For further study:
In the Bible there were plenty of people who heard the Word but never had it unfolded. Their spiritual blindness hardened their hearts to where they couldn’t see the light. Read Luke 8. How did Jesus speaking in parables accomplish this? His disciples asked Jesus to explain. Luke 8:10 He said, “The knowledge of the secrets of the kingdom of God has been given to you, but to others I speak in parables, so that, “‘though seeing, they may not see; though hearing, they may not understand.'”
Read Nehemiah 8:1-12. In it, Ezra reads the Book of the Law. Note the reactions people had to the Word of God giving them light of understanding.
About the need for a lamp, I have a fond childhood memory that began with a terrible storm that came through Chicagoland when I was in the 1st or 2nd grade. Chicago is not called the Windy City for nothing and throughout Illinois, some storms produce enough twisters to consider it part of “Tornado Alley.” During one of these storms, the electric power went out at our house.
Psalm 104:1 Praise the LORD, O my soul. O LORD my God, you are very great; you are clothed with splendor and majesty. 2 He wraps himself in light as with a garment; he stretches out the heavens like a tent 3 and lays the beams of his upper chambers on their waters. He makes the clouds his chariot and rides on the wings of the wind…19 The moon marks off the seasons, and the sun knows when to go down. 20 You bring darkness, it becomes night, and all the beasts of the forest prowl. 21 The lions roar for their prey and seek their food from God. 22 The sun rises, and they steal away; they return and lie down in their dens. 23 Then man goes out to his work, to his labor until evening.
Isaiah 35:1 The desert and the parched land will be glad; the wilderness will rejoice and blossom. Like the crocus, 2 it will burst into bloom; it will rejoice greatly and shout for joy. The glory of Lebanon will be given to it, the splendor of Carmel and Sharon; they will see the glory of the LORD, the splendor of our God. 3 Strengthen the feeble hands, steady the knees that give way; 4 say to those with fearful hearts, “Be strong, do not fear; your God will come, he will come with vengeance; with divine retribution he will come to save you.” 5 Then will the eyes of the blind be opened and the ears of the deaf unstopped. 6 Then will the lame leap like a deer, and the mute tongue shout for joy. Water will gush forth in the wilderness and streams in the desert. 7 The burning sand will become a pool, the thirsty ground bubbling springs. In the haunts where jackals once lay, grass and reeds and papyrus will grow. 8 And a highway will be there; it will be called the Way of Holiness. The unclean will not journey on it; it will be for those who walk in that Way; wicked fools will not go about on it. 9 No lion will be there, nor will any ferocious beast get up on it; they will not be found there. But only the redeemed will walk there, 10 and the ransomed of the LORD will return. They will enter Zion with singing; everlasting joy will crown their heads. Gladness and joy will overtake them, and sorrow and sighing will flee away.
Psalm 76:1 In Judah God is known; his name is great in Israel. 2 His tent is in Salem, his dwelling place in Zion. 3 There he broke the flashing arrows, the shields and the swords, the weapons of war. Selah 4 You are resplendent with light, more majestic than mountains rich with game. 5 Valiant men lie plundered, they sleep their last sleep; not one of the warriors can lift his hands. 6 At your rebuke, O God of Jacob, both horse and chariot lie still. 7 You alone are to be feared. Who can stand before you when you are angry? 8 From heaven you pronounced judgment, and the land feared and was quiet– 9 when you, O God, rose up to judge, to save all the afflicted of the land. Selah 10 Surely your wrath against men brings you praise, and the survivors of your wrath are restrained. 11 Make vows to the LORD your God and fulfill them; let all the neighboring lands bring gifts to the One to be feared. 12 He breaks the spirit of rulers; he is feared by the kings of the earth.
In the Bible, the “light of life” is a phrase meaning the fullness of life. Life on full display. On the big screen, not just the hand-held device. 
The connection between light and sight is undeniable. If darkness and blindness lead us to feelings of uncertainty and even fear, it shouldn’t surprise us that both light and sight can lead us to confidence. 