“If therefore your whole body is full of light, having no part dark, it will be wholly full of light,”
But if the eye is singly on Jesus and His word, then the whole body will be full of light and there will be no part dark. It will be wholly full of light. And it will shine out to others. And day by day we will walk in that light, and we will continually receive that light, and we will let that light shine before men. For we ourselves will have become a light. Such indeed will be the light that no darkness will be able to penetrate it. And the one who is so suffused with light will continually come to God's light in Jesus that his light might be constantly renewed, and that it might be clearly seen that his deeds are wrought in God (John 3:21).
“As when the lamp with its bright shining gives you light.”
The whole life will then be bathed in light, just as when in a room the bright shining of the lamp gives you light. We will ever be in God's room with Him, with his light shining on us, and we will be enveloped in the light of Him Who is the light of the world, and in the light of His word. We will walk in the light as He is in the light, and the blood of Jesus Christ His Son will go on cleansing us from all sin (1 John 1:7). And when the light reveals our lives to us for what they are, and we are made aware of imperfections that are there, we will then cry for all that is unfit to be removed, and the blood of Jesus Christ His Son will do its work. And His cleansing, like the cleansing of the wick, is what will enable us to continue in the light with our eyes firmly fixed on Him and His word. And He will constantly shine on us like a shining light whose beam is ever fixed on us because our eyes are on Him.