A New Thought about Sin

As I was reading the first couple chapters of 1 John, I had a new thought about this very familiar passage. Before sharing my new thought, let me share the key verses that caught my attention:

God is light. In him there is no darkness at all. If we claim to have fellowship with him yet walk in the darkness, we lie and do not live by 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, his Son, purifies us from all sin.
(1 John 1:5b-7, NIV)