D.A. Carson once said,

Sometimes the godliest thing you can do in the universe is get a good night’s sleep — not pray all night, but sleep. I’m certainly not denying that there may be a place for praying all night; I’m merely insisting that in the normal course of things, spiritual discipline obligates you get the sleep your body need.

David Murray explains why.

Why You Should Go to Bed Early Tonight from Crossway on Vimeo.