What does the Bible say about the advantage of preaching?

In Romans 3:1-4, Paul emphasizes the significant advantage of having access to the oracles of God, which are the Scriptures containing everything God says about salvation. The Jews had the privilege of God's revelation and the gospel preached through prophecy and law. This access is crucial because, without it, one cannot truly understand how God can save sinners, as it is through the preaching of the gospel that we learn of Christ and His work of redemption. The true advantage lies in being taught the fullness of God's grace and mercy found in Christ, which transforms our understanding and relationship with God.