An implication of saying that the essence of worship is satisfaction in God is that worship becomes radically God-centered. Nothing makes God more supreme and more central than when people are utterly persuaded that nothing-not money or prestige or leisure or family or job or health or sports or toys or friends or ministry-is going to bring satisfaction to their aching hearts besides God. This conviction breeds a people who go hard after God on Sunday morning (or any other time).They are not confused about why they are there. They do not see songs and prayers and sermons as mere traditions or mere duties. They see them as means of getting to God or God getting to them for more of his fullness.
John Piper, Let the Nations Be Glad, p. 228