1 John 1:7
But if we walk in the light, as he is in the light, we have fellowship one with another…
1. I have said that the representation of the nature of God as light set Him forth to us as the God of revelation. Hence a leading element of walking in the light must be the subjection of our own spiritual nature to the action of God's Word.
2. Another feature of the nature of God as light was seen to be His absolute purity. This also, therefore, must be a characteristic of our walk as His children.
3. The last characteristic of the Divine nature suggested by the phrase "God is light" was moral and spiritual glory. To walk in the light, then, must be so to walk as that this glory may be reflected through us in the view of the world. In other terms, every element of the moral glory of God must be seen in our life and conduct. Hence, for instance, we are to walk in wisdom. We have also to walk in righteousness. No less manifestly are we to walk in love.
(J. P. Lilley, M. A.)
Parallel VersesKJV: But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin.