How do we know that the gospel is meant for everyone?

In his farewell address to the elders in Ephesus, Paul states that he has not shunned to declare all the counsel of God to everyone, indicating the inclusive nature of the gospel. He explicitly mentions preaching to both Jews and Greeks, showing that the message of repentance and faith in the Lord Jesus Christ is not limited by ethnicity or background. This universal call exemplifies God's design for the gospel—it's meant to reach all nations, transcending barriers and providing salvation to all who believe.