At last—we return to missions and worship to conclude the book. It’s obvious by now that Piper is strongly influenced by Great Awakening pastor Jonathan Edwards, and he says as much here. Then he goes on to explain that missions is necessitated because “creation is telling the glory of God, but the peoples are not treasuring it…. The ultimate issue addressed by missions is that God’s glory is dishonored among the peoples of the world.” Then he connects worship with missions and all that with compassion for the lost: “Unbelief not only dishonors God but destroys the soul….And so missions is driven by a passion not only to restore the glory of God to its rightful place in the worshiping soul but but also to rescue sinners from everlasting pain.” The final chapter, probably the one that most enthralled me, deals with the nature of worship itself—what is this that we’re trying to propagate throughout the world? I’ll let him tell it himself, in abbreviated form: Worship in the New Testa...