According to the Bible, darkness is the absence of spiritual light and is the domain of evil. Jesus, the Light of the World, came to rescue us from the darkness of sin and the influence of evil. He commissioned his disciples to continue that mission.
Addressing King Agrippa, Paul said that Jesus sent him, “that they may turn from darkness to light, and from the power of Satan to God” (Acts 26:18). To Colossians, Saint Paul wrote of Christ: “He rescued us from the power of darkness and transferred us to the kingdom of his beloved Son” (Col 1:13). While Jesus saved people from darkness, those who rejected him stayed in darkness because they judged themselves unworthy of eternal life (Acts 13:46). At the last judgement, he will drive them out into the eternal darkness.
Jesus said, “You are the light of the world. … Your light must shine before others, that they may see your good deeds and glorify your heavenly Father” (Mt 5:14,16). We received the light of Christ at the time of baptism. Our light must shine through our virtuous deeds and thus glorifying God. Those who have received light, if not vigilant against the evil, might blow it as with Judas Iscariot. Let us keep up our light and lead others to the light.