" God said, 'Let there be light.'

Here's a paraphrase:

Let there be electromagnetic radiation with varying wavelengths traveling at 186,282 miles per second. Let there be radiowaves, microwaves, and X-rays. Let there be photosynthesis and fiber optics. Let there be LASIK surgery, satellite communication, and suntans. Oh, and let there be rainbows after rainstorms.

'Let there be light.'

These are God's first recorded words.

This is God's first recorded miracle.

Light is the source of vision; without it we can't see a thing. Light is the key to technology; it's how we can talk to someone halfway around the world without so much as a second's delay because light can circle the globe seven and a half times a second. Light is the first link in the food chain; no photosynthesis equals no food. Light is the basis of health; the absence of light causes everything from vitamin D deficiency to depression. Light is the origin of energy; in Einstein's equation E = MC squared, energy (E) is defined as mass (M) times the speed of light (C) squared. The speed of light is the constant. And light is the measuring stick for space-time; a meter is defined as the distance traveled by light in a vacuum during a time interval of 1/299,792,458 of a second.

Light is the alpha and omega of everything, and that includes you. "

― Mark Batterson , Whisper: How to Hear the Voice of God