God’s Mercy in God’s Law – Psalm 119:73-80

The avowal of the prophet, that he had been created by the hand of God, greatly contributed to inspire him with the hope of obtaining the favor which he supplicates. As we are the creatures and the workmanship of God, and as he has not only bestowed upon us vital motion, in common with the lower animals, but has, in addition thereto, given us the light of understanding and reasons — this encourages us to pray that he would direct us to the obedience of his law. And yet the prophet does not call upon God, as if He were under any obligations to him; but, knowing that God never forsakes the work which he has begun, he simply asks for new grace, by which God may carry on to perfection what he has commenced. We have need of the assistance of the law, since all that is sound in our understandings is corrupted; so that we cannot perceive what is right, unless we are taught from some other source. But our blindness and stupidity are still more strikingly manifest, from the fact that teaching will avail us nothing, until our souls are renewed by Divine grace. – John Calvin