This is so true.
The best reason to be good is to want to be good. Internal change requires relationship. It requires love. “Who can be good, if not made so by loving?” asked Augustine. When Augustine made the famous statement, “If you but love God you may do as you incline,” he was perfectly serious. A person who truly loves God will be inclined to please God, which is why Jesus and Paul both summed up the entire law in the simple command, “Love God.”
If we truly grasped the wonder of God’s love for us, the devious question that prompted Romans 6 and 7 —What can I get away with?— would never even occur to us. We would spend our days trying to fathom, not exploit, God’s grace.
Philip Yancey, What’s So Amazing About Grace? 191.