In this first book of the series, Theodore sets out to follow Jesus' command to walk in His light. So, he turns on all of the lights in his house and walks back and forth in front of them every day! By the end of the story Theodore learns that walking in Jesus' light means obeying God's commandments and all that encompasses, like, loving God and other people, reading and studying the Bible and telling others about the Good News of Jesus Christ, the Savior of the world. (1 John 1:17 and John 8:12)