Why should the church preach to all nations?

The directive for the church to preach to all nations in Matthew 28:19 highlights the universal reach of the gospel. God's elect are scattered across various nations and cultures, and each individual needs to hear the gospel in order to come to faith. Preaching to all nations fulfills God's purpose in salvation, as He has chosen a people from every tribe and tongue. This mandate underscores the inclusivity of the gospel, ensuring that every person has the opportunity to know Christ and be saved.