Every human has sinned. We are born with a sin nature. And yet, God calls us to be holy or without sin. John, the author of 1 John, makes it plain and simple why every Christian must be holy...”God is light, in Him there is no darkness at all.” Light stands for all righteousness, purity, and truth. Darkness is sin, deception and impurity. If Christians want to know God and walk with God, they must not deliberately choose sin over obedience. God grants forgiveness through Jesus Christ. So, the goal for every Christ-follower is not to be sinless but rather to sin less.