The 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 StottThe question is not so much what the hand is doing (passing over some cash or a check) but what the heart is thinking while the hand is doing it.
John Stott