12 Observe what follows: “The steps of a good man are ordered by the Lord; and he delights in His way”. That man may himself “delight in the Lord's way,” his steps are ordered by the Lord Himself. For if the Lord did not order the steps of man, so crooked are they naturally, that they would always be going through crooked paths, and by pursuing crooked ways, would be unable to return again. He however came, and called us, and redeemed us, and shed His blood; He has given this ransom; He has done this good, and suffered these evils. Consider Him in what He has done, He is God! Consider Him in what He has suffered, He is Man! Who is that God-Man? Had not you, O man, forsaken God, God would not have been made Man for you! For that was too little for you to requite, or for Him to bestow, that He had made you man; unless He Himself should become Man for you also. For it is He Himself that has “ordered our steps;” that we should “delight in His way.”...
Source: The Enarrations, or Expositions, on the Psalms (New Advent)