Biblical righteousness is more than a private and personal affair; it includes social righteousness as well....Thus Christians are committed to hunger for righteousness in the whole human community as something pleasing to a righteous God.
John StottThe nations are not gathered in automatically. If God has promised to bless "all the families of the earth," he has promised to do so "through Abraham's seed" (Genesis 12:3, 22:18). Now we are Abraham's seed by faith, and the earth's families will be blessed only if we go to them with the gospel. That is God's plain purpose.
John Stott