The Future's So Bright, I Gotta Wear Shades

 

The moonlight will be as bright as the sunlight, and the sunlight will be seven times brighter — like the light of seven days — on the day that the Lord bandages his people’s injuries and heals the wounds he inflicted.

Isaiah 30:26 (CSB)

Isaiah had the uncomfortable task of pronouncing judgment on Judah, but he also got to hold out the hope of God's promised restitution and reward. Very much like the now-classic, "It's Friday, But Sunday's Coming!"

The metaphor of the future being bright  -  with the moon and sun giving far more light than normal  -  isn't just an Old Testament thing. It makes its way into the final book of the Bible, describing the new Jerusalem in Revelation 21:23 (AMP):

The city has no need of the sun nor of the moon to give light to it, for the glory (splendor, radiance) of God has illumined it, and the Lamb is its lamp and light.

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Truth is...We can have the same hope of a bright and glorious future. No matter how dark our current circumstances may be, the all-loving Creator who first said, "Let there be light," has no intention of leaving us alone, fumbling around in the dark forever.

All things were made by him, and nothing was made without him. In him there was life, and that life was the light of all people. The Light shines in the darkness, and the darkness has not overpowered it.
John 1:3-4 (NCV)