You need to read verses 6 and 7 together. 1 John 1:6-7 - IF we say that we have fellowship with Him, and walk in darkness, we lie and do not practice the truth. But IF we walk in the light as He is in the light, we have fellowship with one another, and the blood of Jesus Christ His Son cleanses us from all sin. Walking in darkness is descriptive of lost unbelievers. Walking in the light is descriptive of saved believers. Only saved believers are in the light. Acts 26:18 - to open their eyes, in order to turn them from darkness to light, and from the power of Satan to God, that they may receive forgiveness of sins and an inheritance among those who are sanctified by faith in Me. 2 Corinthians 6:14 - Do not be unequally yoked together with unbelievers. For what fellowship has righteousness with lawlessness? And what communion has light with darkness? Lost unbelievers walk in darkness, not in the light. Genuine saved believers walk in the light, not in darkness. IF confirms these positions in verses 6 and 7. It's one or the other. There is no third camp of saved believers walking in darkness or lost unbelievers walking in the light.