If we say that we haven't sinned, we make him a liar, and his word is not in us.

 (ii) The dark is hostile to the light. In the prologue to his gospel John writes that the light shines in the darkness, and the darkness has not overcome it ( John 1:5). It is a picture of the darkness seeking to obliterate the light--but unable to overpower it. The dark and the light are natural enemies. 