Paul must have often felt like a mother duck guiding ducklings to safety. He saw the enthusiasm of the Colossian Christians but knew they had no idea of the dangers they would face. Longing for them to continue growing in faith, Paul—though stuck in prison—weaves together high theology with holy living and exhortations with warnings. Paul’s main theme in this book is the fullness of Christ, and the fullness that Christians have in Him.