How does preaching relate to salvation in the Reformed faith?

In Reformed theology, preaching is central to the process of salvation, functioning as the means by which God conveys His grace and truth to His people. Romans 10:14-15 emphasizes this when it states, "How then shall they call on him in whom they have not believed? and how shall they believe in him of whom they have not heard? and how shall they hear without a preacher?" Through the faithful proclamation of the gospel, the Holy Spirit works to transform hearts, leading individuals to respond in faith. The importance of preaching is underscored by the belief that it activates the effectual call, as illustrated in the illustration of Eleazar fetching a bride for Isaac, where he prayed for God's guidance in the mission, recognizing that it is God who orchestrates salvation.