John Calvin Commentary Psalms 103:7

"He made known his ways unto Moses, His doings unto the children of Israel." — Psalms 103:7 (ASV)

He hath made known his ways to Moses. David now speaks in the name of the chosen people, and he does this very suitably, being led to it by considering the benefits God had bestowed upon himself. Convinced that it was only as a member of the Church that he had been enriched with so many blessings, he immediately turns his thoughts back to the common covenant made with the people of Israel.

He, however, continues the same train of thought as in the preceding verse. For these ways, which he says had been shown to Moses, were nothing other than the deliverance accomplished for the people until they entered the promised land. He selected this as an instance of God’s righteousness and judgment, surpassing all others, to prove that God always shows himself righteous in helping those who are oppressed.

But since this instance depended upon the Divine promise, he undoubtedly focuses primarily on it. His language implies that God’s righteousness was clearly demonstrated and seen in the history of the chosen people, whom he had adopted and with whom he had entered into covenant. God is said to have made known his ways first to Moses, who was his servant and messenger, and afterwards to all the people.

Moses is here represented as invested with the office to which he was Divinely appointed, for it was God’s will to be made known to the people through the agency and work of that distinguished man. The ways, then, and the doings of God, are his rising up with wonderful power to deliver the people, his leading them through the Red Sea, and his manifesting his presence with them by many signs and miracles.

But as all this flowed from the free covenant, David exhorts himself and others to give thanks to God for having chosen them to be his peculiar people and for enlightening their minds with the truths of his law. Man, without the knowledge of God, is the most miserable creature imaginable; therefore, the revelation of his fatherly love, which God has been pleased to give us in his Word, is an incomparable treasure of perfect happiness.