Worship is a way of gladly reflecting back to God the radiance of his worth. This cannot be done by mere acts of duty. It can be done only when spontaneous affections arise in the heart.
John PiperTrue worship comes from people who are deeply emotional and who love deep and sound doctrine. Strong affections for God rooted in thrush are the bone and marrow of biblical worship.
John PiperDo you feel loved by God because you believe he makes much of you, or because you believe he frees you and empowers you to enjoy making much of him?
John PiperLife is precarious, and life is precious. Don't presume you will have it tomorrow, and don't waste it today.
John PiperWe can say that true gratitude does not give rise to the debtor's ethic because it gives rise to faith in future grace. With true gratitude there is such a delight in the worth of God's past grace, that we are driven on to experience more and more of it in the future...it is done by transforming gratitude into faith as it turns from contemplating the pleasures of past grace and starts contemplating the promises of the future.
John Piper