What does 'let the redeemed of the Lord say so' mean?

The phrase 'let the redeemed of the Lord say so' in Psalm 107 serves as a call to action for believers to publicly acknowledge and celebrate the work of God in their lives. Redemption through Christ is not a private matter; it is a proclamation that should resonate within the community of believers. When we recognize what God has done for us, it compels us to speak out, share our stories, and express gratitude. This act of declaring His works serves not only as a testimony of faith but as a reminder to ourselves and others of the transformative power of God's grace. The redeemed are called to be ambassadors of His mercy, which ultimately brings glory to God.