Why is preaching the gospel essential in the church?

In Romans 1:16, Paul declares that he is not ashamed of the gospel, for it is the power of God for salvation to everyone who believes. Preaching the gospel is essential because it focuses on Christ and His redemptive work rather than human wisdom or persuasion. It calls sinners to acknowledge their need for a Savior and to trust in the finished work of Christ on the cross. Through faithful preaching, the church fulfills its mission of proclaiming the good news that brings salvation and eternal life. Without the gospel, there can be no true worship or salvation.