King David was a man who went through some very dark times. Some of them where his fault, and some of them weren’t. In either case, David always knew that the light on his path came from God. He was still God’s anointed no matter how dark it got. Even when he made bad choices, he had a heart for the Lord. And God never allowed him to be destroyed.
It’s the same with those of us who love God. His light is always available to us. No matter how badly we think our life is, we are never truly in darkness when we look to Him. God’s light is constant because He is constant.
1John 1: 5-7
This is the message which we have heard from Him and declare to you, that God is light and in Him is no darkness at all. If we say that we have fellowship with Him, and walk in darkness we lie and do not practice the truth. But if we walk in the light as He is in the light we have fellowship with one another, and the blood of Jesus Christ His Son cleanses us from all sin.