John 1:5

5 The light shines in the darkness, and the darkness has not overcome[a] it.

John focuses a lot on Jesus, who He is in John 1. In fact, he is really showing that you and I cannot live without Him.  That not only is He God, but He is the God who came in the flesh, came to give us life, life more abundantly, that He came to bring and truth, that He came to shine light into the darkness we were living in, and in this verse He brings us hope, by reminding us that there is no existence of darkness that Christ cannot dispel as He is "The Light of the World" and the darkness "cannot" overcome it.

The application here is simple to understand.   Light is required for life here on planet earth; without it, we would perish.  This verse reminds us that life is found in Jesus Christ, that all that we need is found in Him, and that He has the power to dispel the darkness in your life, so that you can overcome the things that bound you, and you can be set free.   Jesus said you shall know the truth and the truth will set you free.  We often forget that Jesus came to bring truth and grace. The truth is, God loves you just the way you are (that's grace), but He loves you too much to keep you that way (that's the truth).   So light dispels darkness, as truth dispels lies, we must allow the Lord to shed light on the lies we believe, and live in the truth of who/what He says about us.

Lord, O' that you would dispel the darkness from our lives, even the deep areas, that you would drive out things that don't belong, that you would produce growth to the things that do, that you would remove the lies that the enemy has planted and expose truth, what you say about us, who you see us to be, where you see us going, allow us to walk with you in an authentic relationship, that we would be transformed by that relationship, in Jesus' name, Amen!