Reasoning that he wouldn't have any dates left to eat if he continued like this, he blew out the candle, and quickly scoffed the rest of the dates. He preferred darkness and denial to the light of reality. John's gospel says that many people treat the truth about Jesus like that. John uses the metaphor of light and darkness, of sight and blindness, when he speaks of faith in God through his son Jesus Christ. Everyone who does evil hates the light, and will not come into the light for fear that his deeds will be exposed.
People are just like cockroaches.
In the same way, we avoid the light of Christ, because we don't want to admit we are sinful. He can either dodge back into the darkness because he doesn't want to face the dirt he sees on himself, or he can walk into the full light of the forgiveness and fellowship God offers, and to his amazement he finds that the dark stains disappear. The blood of Jesus cleanses from sin. If you have, you no longer walk in the darkness. John says that if we walk in the light with Jesus, then we enjoy fellowship with God.