How do we know preaching is important for Christians?

Preaching serves as the primary vehicle for communicating the gospel and is committed to the trust of those God has called, as seen in 1 Corinthians 1:21. The apostle Paul points out that God chose the foolishness of preaching to save those who believe. This underscores the reality that while God could reveal Himself in other ways, He has chosen to do so through the fallible voices of men. The act of preaching is vital because it confronts individuals with the gospel and instills faith. By hearing the Word proclaimed, sinners are led to acknowledge their need for grace and repentance.