The Law of the Lord is perfect. Whatsoever proceeds from God is perfect in its kind; his "Law" especially—the rule of life to his rational creatures. That salvation is not by the Law is not the fault of the Law, but of man, who cannot keep it.
"The Law" itself "is holy, and the commandment holy, and just, and good" (Romans 7:12). Converting the soul. The word employed, meshibah, is used of restoring from disorder and decay (Psalms 80:19), from sorrow and affliction (Ruth 4:15), from death (1 Kings 17:21, 1 Kings 17:22).
The Law, by instructing men, restores them from moral blindness to the light which is theirs by nature (Romans 1:19), and, as a further consequence, in many cases, restores them from sin to righteousness.
The testimony of the Lord is sure. 'Eduth—the word translated "testimony"—is employed especially of the Decalogue (Exodus 25:16, Exodus 25:21, Exodus 25:22, Exodus 25:26; Numbers 9:15; Numbers 17:1-13:23; Numbers 18:2, etc.
); but may be regarded as sue of the many synonyms under which the whole Law may be spoken of (see Psalms 119:2, Psalms 119:14, Psalms 119:22, Psalms 119:24, Psalms 119:88, etc.). The Law is "sure"—i.
e. fixed, firm, stable—in comparison with the fleeting, shifting, unstable judgments of human reason. Making wise the simple; i.e. enlightening their moral judgment.