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 PiperWill I find spiritual communion with God sweet enough, and hope in his promises deep enough, not just to cope, but to flourish and rejoice in him?
John PiperWithout extended, concentrated prayer, the ministry of the Word withers. And when the ministry of the Word declines, faith (Rom. 10:17; Gal. 3:2, 5) and holiness (John 17:17) decline. Activity may continue, but life and power and fruitfulness fade away. Therefore, whatever opposes prayer opposes the whole work of ministry.
John PiperI recall hearing one of my professors in seminary say that one of the best tests of a person's theology was the effect it has on one's prayers.
John PiperThe critical question for our generationโand for every generationโ is this: If you could have heaven, with no sickness, and with all the friends you ever had on earth, and all the food you ever liked, and all the leisure activities you ever enjoyed, and all the natural beauties you ever saw, all the physical pleasures you ever tasted, and no human conflict or any natural disasters, could you be satisfied with heaven, if Christ were not there?
John Piper