Then your light will break forth like the dawn, and your healing will quickly appear. (Isaiah 58:8)
If it’s the case that you usually wake up after dawn, you wake up in the morning to a blue (or maybe white or gray) sky. The sun streams into your room, or at the very least, you are not groping for your phone in the darkness. The day goes on, becomes brighter, then finally fades into purple before going black. Then the pattern repeats. Light becomes darkness every day, signifying closure, ending, a wind-down.
But if you wake up before dawn, you find a different pattern: you wake up to darkness and wait for the sky to pale and the sun to appear. You wait for the light to break forth.