What is sin? It is the glory of God not honored. The holiness of God not reverenced. The greatness of God not admired. The power of God not praised. The truth of God not sought. The wisdom of God not esteemed. The beauty of God not treasured. The goodness of God not savored. The faithfulness of God not trusted. The commandments of God not obeyed. The justice of God not respected. The wrath of God not feared. The grace of God not cherished. The presence of God not prized. The person of God not loved. That is sin.
John PiperWorship is what we were created for. This is the final end of all existence-the worship of God. God created the universe so that it would display the worth of His glory. And He created us so that we would see this glory and reflect it by knowing and loving it-with all our heart and soul and mind and strength. The church needs to build a common vision of what worship is and what she is gathering to do on Sunday morning and scattering to do on Monday morning.
John PiperTherefore bread was created for the glory of Christ. Hunger and thirst were created for the glory of Christ. And fasting was created for the glory of Christ. Which means that bread magnifies Christ in two ways: by being eaten with gratitude for his goodness, and by being forfeited out of hunger for God himself. When we eat, we taste the emblem of our heavenly food—the Bread of Life. And when we fast we say, “I love the Reality above the emblem.” In the heart of the saint both eating and fasting are worship. Both magnify Christ.
John PiperThe line of lovelessness is not drawn between speaking and doing, but between speaking and doing in the truth, and speaking and doing in emptiness. Truth turns word-love into deed-love.
John Piper