The book of 1 John, written by Jesus' closest friend, provides profound insights into our fellowship with God. John wrote with three purposes: that our joy may be full, that we may not sin, and that we may know we have eternal life. The central concept binding these purposes is fellowship—our connection with God and with each other.This fellowship happens in the heart and mind of God, in His light where no darkness exists. Our fellowship with other believers is based on our individual fellowship with God, not on perfect agreement. When we walk in God's light, the blood of Jesus continuously cleanses us from sin—like windshield wipers constantly removing raindrops. This isn't 'once saved, always saved' but 'once saved, staying saved' through Christ as we continue walking with Him. Our attitudes toward sin significantly impact this fellowship: rebellion and impenitence break it, while confession maintains it. When walking in the light, confession becomes not an obligation but a desire to restore intimacy with God after disappointing Him.