All of history is moving toward one great goal, the white-hot worship of God and his Son among all the peoples of the earth. Missions exists because worship doesn't. Worship is ultimate, not missions, because God is ultimate, not man.... When this age is over, and the countless millions of the redeemed fall on their faces before the throne of God, missions will be no more. It is a temporary necessity. But worship abides forever.
John PiperIf my life was to have a single, all-satisfying, unifying passion, it would have to be God's passion.
John PiperThe infinite reservoir of future grace is flowing back through the present into the ever-growing pool of past grace. The inexhaustible reservoir is invisible except through the promises. But the ever-enlarging pool of past grace is visible; and God means for the certainty and beauty and depth to strengthen our faith in future grace.
John Piper