Unchangeable Light

When we think of visible light, what we’re really talking about is pure white light. Sir Issac Newton was the first person to scientifically identify that white light (visible light) also contains colors. Newton placed a prism in a room and passed a beam of light through it. He discovered what we now know as the spectrum—think colors of the rainbow—starting at red and ending at magenta.

He then took another prism and redirected all of the beams back through it, recombining them back into pure white light.

This ultimately proved that white light is actually a merger of six colors (3+3) that can be separated and recombined freely. Newton secluded each color and determined that nothing could be done to change them in any way.

In the Bible, we see the rainbow (represented by the visible light spectrum) as a symbol of God’s promises (Genesis 9:12-13)—nothing can ever be done to change His promises that He’s made to us. One of the most beautiful promises comes from Jesus’ words in John 3:16: “For God so loved the world, that he gave his only Son (Jesus), that whoever believes in him should not perish but have eternal life.”

Long before Newton ever discovered that white light was simply a merger of colors, God had already made it so, as commanded to the Israelites through Moses in the book of Exodus (written ~1445 – 1405 BC):

"You shall make a lampstand of pure gold. The lampstand shall be made of hammered work: its base, its stem, its cups, its calyxes, and its flowers shall be of one piece with it. And there shall be six branches going out of its sides, three branches of the lampstand out of one side of it and three branches of the lampstand out of the other side of it; three cups made like almond blossoms, each with calyx and flower, on one branch, and three cups made like almond blossoms, each with calyx and flower, on the other branch—so for the six branches going out of the lampstand. And on the lampstand itself there shall be four cups made like almond blossoms, with their calyxes and flowers, and a calyx of one piece with it under each pair of the six branches going out from the lampstand. Their calyxes and their branches shall be of one piece with it, the whole of it a single piece of hammered work of pure gold. You shall make seven lamps for it. And the lamps shall be set up so as to give light on the space in front of it. Its tongs and their trays shall be of pure gold. It shall be made, with all these utensils, out of a talent of pure gold. And see that you make them after the pattern for them, which is being shown you on the mountain.” (Exodus 25:31-40)

The six lamps (three on each side) surround the one central lamp in the middle. This parallels the observations that we find in the color spectrum: 3 + 3 + 1 = 7.