Preaching is a central, ordinary act of public worship through which God, by His Spirit, makes the gospel an effectual means of converting sinners and building up the saints. It is not merely the delivery of human wisdom, but the authoritative yet compassionate opening and application of the Holy Scriptures.
Within the Reformed tradition, preaching is recognized as a vital, ordinary part of religious worship. As taught in the Westminster Shorter Catechism Q.89, the Spirit of God uses the preaching of the Word as an effectual means to convince and convert sinners, and to build believers up in holiness. This aligns with the 1689 LBCF Ch.22 §5, which places the preaching and hearing of the Word alongside the sacraments and prayer as essential components of our public service to God. We are reminded that we are more flawed than we realize, yet through the faithful proclamation of Christ, we are brought to see that we are more deeply loved and accepted in Him than we ever dared hope.
The preacher is tasked with delivering the pure Word of God, avoiding the corruption of secular philosophy or theatrical performance. As William Perkins highlights in The Art of Prophesying, the minister must preach with a spirit of dependence, speaking plainly and directly, like a father to his children. The goal is not to impress with human eloquence but to demonstrate the power of the Spirit, ensuring that faith rests upon the work of Christ. We are commanded by the Apostle Paul: 2 Timothy 4:2. Thus, preaching is never a lecture on moralism, but a gospel-centered announcement that exposes our need for grace and anchors our obedience in our acceptance by Christ.