What does the Bible say about the effectiveness of preaching?

The effectiveness of preaching the gospel is not inherent in the act itself but is reliant on the accompanying work of the Holy Spirit. As stated in Hebrews, the word preached is of no profit unless it is mixed with faith. This reflects the necessity of God’s Spirit to grant faith for understanding and acceptance of the gospel. The Apostle Paul further emphasizes this in Romans, where he questions how people can believe in Christ without hearing of Him, highlighting the importance of being sent and prepared by God for the message to take root in receptive hearts. The ultimate goal of preaching is to magnify God’s glory through the manifestation of Christ’s redemptive work, regardless of apparent observable results.