What does the Bible say about the preaching of the gospel?

In Colossians 2:5-7, Paul emphasizes the significant blessings that come through the preaching of the gospel. He notes that it serves as a comfort to God's people, instilling peace and hope as they reflect on what God has done for them through Christ. Additionally, this preaching unites the hearts of believers, fostering a shared love for God and one another. Moreover, it reminds the church of their identity and salvation in Jesus, reinforcing the truth that they are sustained by grace alone. The gospel combats the attacks of the adversary, deceivers, and discord within the church by focusing believers on the saving work of Christ.