Why is it important to proclaim the gospel to all nations?

In Acts 1:8, Jesus' command to His disciples was to be witnesses 'to the ends of the earth', which establishes the church's mission to spread the good news globally. The gospel is meant for all nations because it reveals God’s plan of salvation for a diverse humanity, as articulated in Matthew 28:19-20 with the Great Commission command. This task aligns believers with God’s redemptive history and showcases His sovereign grace, as described in Romans 1:16, where Paul states that the gospel is the power of God for salvation to everyone who believes.