The law of the LORD is perfect, converting the soul: the testimony of the LORD is sure, making wise the simple.
All Commentaries on Psalms 19:7 Go To Psalms 19
Augustine of Hippo
AD 430
8. "The law of the Lord is undefiled, converting souls" (ver. 7). The law of the Lord, therefore, is Himself who came to fulfil the law, not to destroy it; an undefiled law, "Who did no sin, neither was guile found in His mouth," not oppressing souls with the yoke of bondage, but converting them to imitate Him in liberty. "The testimony of the Lord is sure, giving wisdom to babes." "The testimony of the Lord is sure;" for, "no man knoweth the Father save the Son, and he to whomsoever the Son will reveal Him," which things have been hidden from the wise and revealed to babes; for, "God resisteth the proud, but giveth grace to the humble."