This sermon introduces the historical background and purpose for the book of Colossians, emphasizing the supremacy, sufficiency, and saving power of Jesus Christ as the antidote to the false teachings threatening the early church. It highlights how the Colossian believers, though not personally known to Paul, were vulnerable to heresies rooted in Jewish legalism, Greek philosophy, and mystical spirituality—particularly the worship of angels, rigid religious rituals, and secret knowledge—none of which could supplement or surpass Christ. Drawing from Paul's urgent warning to walk in Christ as received, the message calls the church to remain rooted in faith, built up in Christ, and anchored in gratitude, rejecting all additions to the gospel that divert focus from Christ alone. The historical context of Colossae's decline and the church's growth underscores the spiritual danger of compromise, while the modern application challenges believers to cherish the freedom and clarity of Scripture, recognizing that true understanding comes only through the Holy Spirit, not hidden codes or human traditions. Ultimately, the letter to Colossians is a passionate plea to preserve the purity of the gospel by centering all life and doctrine on Christ, the one mediator and supreme head of the Church.