This document discusses God's forgiveness as described in 1 John 1:5-10 and 2:1-2. It says that God is light with no darkness, and that if we claim to have fellowship with God while walking in darkness, we are lying. However, if we walk in the light as God is in the light, we have fellowship with one another and Jesus' blood purifies us from sin. It also notes that if we confess our sins, God is faithful and just to forgive us our sins and purify us from unrighteousness, while if we claim to be without sin we are deceiving ourselves. John wrote his letter so that people would not sin, but that if they do sin, Jesus