Is 50.10-11

Here's a beautiful verse that I came across today in Isaiah, one which was of great encouragement to me a couple years ago when I was struggling with a great deal of doubt about God, truth, how to know that I know true truths about God and not just constructed doctrines of man.

"Who among you fears the Lord and obeys the voice of his servant? Let him who walks in darkness and has no light trust in the name of the Lord and rely on his God. Behold, all you who kindle a fire, who equip yourselves with burning torches! Walk by the light of your fire, and by the torches that you have kindled! This you have from my hand: you shall lie down in torment." -Is 50.10-11