Why is it said that preaching has no power apart from God's grace?

When it is stated that preaching has no power apart from God's grace, it highlights the necessity of divine intervention in the delivery and reception of the Word. The sermon emphasizes that while the message may be presented, it will have no effect unless God allows it to resonate within the hearts of listeners. This grace not only enhances understanding but also empowers a true response, leading to genuine conversion. The transformation observed in believers who respond to the gospel demonstrates the undeniable role of God's grace in the preaching process.