“Jesus exalted the law of God, and made its importance more evident even than it had been before. In a word, ‘He magnified the law and made it honorable’ (Isaiah 42:21). …
“Let us beware of despising the Old Testament under any pretense whatever. Let us never listen to those who bid us throw it aside as an obsolete, antiquated, useless book. The religion of the Old Testament is the embryo of Christianity. The Old Testament is the Gospel in the bud. The New Testament is the Gospel in full flower. The Old Testament is the Gospel in the blade. The New Testament is the Gospel in full ear. …
“Let us, for another thing, beware of despising the law of the Ten Commandments. Let us not suppose for a moment that it is set aside by the Gospel, or that Christians have nothing to do with it. The coming of Christ did not alter the position of the Ten Commandments one hair’s breadth. If anything, it exalted and raised their authority (Romans 3:31). …
“In the last place, let us beware of supposing that the Gospel has lowered the standard of personal holiness, and that the Christian is not intended to be as strict and particular about his daily life as the Jew. … The more light we have, the more we ought to love God. The more clearly we see our own complete and full forgiveness in Christ, the more heartily we ought to work for His glory. …
“Jesus shows us that the law, as expounded by Him, was a far more spiritual and heart-searching rule than most of the Jews supposed.” —J.C. Ryle, in Expository Thoughts On The Gospels