If the pursuit of God's glory is not ordered above the pursuit of man's good in the affections of the heart and the priorities of the church, man will not be well served, and God will not be duly honored. I am not pleading for a diminishing of missions but for a magnifying of God. When the flame of worship burns with the heat of God's true worth, the light of missions will shine to the darkest peoples on earth.
Where passion for God is weak, zeal for missions will be weak. Churches that are not centered on the exaltation of the majesty and beauty of God will scarcely kindle a fervent desire to "declare his glory among the nations" (Ps 96:3).
John Piper, Let the Nations be Glad, p. 18.