Another way of putting the thesis of this book is found in the Introduction. “The acid test of biblical God-centeredness – and faithfulness to the gospel – is this: Do you feel more loved because God makes much of you, or because, at the cost of his Son, he enables you to enjoy making much of him forever? Does your happiness hang on seeing the cross of Christ as a witness to your worth, or as a way to enjoy God’s worth forever?” John Piper, God Is The Gospel.