The book of 1 John is an eyewitness account of the ministry of Jesus. It is written to give assurance to believers that they have put their faith in the right person. John’s purpose is to testify to Jesus Christ and to share the fellowship we all have in that relationship. Within the body of believers, our joy flourishes … made complete. Verses 5-10 are a very controversial passage but they don’t have to be. The message is clear. If we walk in the light as He is in the light then we have fellowship with each other and the blood of Jesus cleanses us from all sin.