What does the Bible say about the gospel banner?

The gospel banner, as described in Isaiah 66:19, represents a sign of God's sovereign grace. It signifies both the end of the Old Testament dispensation and the glorious spread of the gospel to the Gentiles. The prophet Isaiah foretold that those who escape judgment would proclaim God's glory among nations that had not heard of Him. This gospel banner serves as a rallying point for believers and symbolizes God's mercy and call to salvation, echoing through the ministry of Christ and His apostles as they reached out to the lost.