This sermon explores the practical implications of being a new creation in Christ, focusing on the behavioral transformation required of believers. Using the metaphor of a caterpillar becoming a butterfly, the message emphasizes that spiritual renewal must manifest in concrete changes in action, speech, and thought. The primary exposition centers on Ephesians 4:28, interpreting the prohibition against stealing as a mandate for diligent labor, frugality, and generosity, grounded in the Westminster Larger Catechism. The preacher further elaborates on the commands for kindness, tender-heartedness, and biblical forgiveness, urging the congregation to examine their own lives against these high standards. The tone is convicting and instructional, challenging listeners to rely on God's grace to fulfill these duties and to place their trust in Jesus Christ as both Savior and Lord.