But who could perfectly fulfill the law except Him who came for this very purpose, that all things might be fulfilled?
On the other hand, the same law points to its completing end, that is, to the final goal toward which all the institutions and circumstances of the Old Testament were directed.
This goal is justification through Jesus Christ. He Himself testified that not only the law, but also the prophets and the psalms bear witness to Him (Lk 24:44).
Chrysostom says: "The Apostle calls the Jews' righteousness their own either because it is acquired by labors and sweat, or because the law no longer has force.
"He calls the righteousness from faith the righteousness of God because it is acquired solely by grace from above. We are justified not by labors, but by the gift of God.
"By contrast, those who constantly resist the Holy Spirit and strive to be justified through the law are far from faith.
"Being far from faith, and not receiving the justification granted by faith, while also being unable to be justified by the law, they have lost everything.
"Notice Paul's prudence. Since he called both the law and the Gospel righteousness, believing Jews might think that they possess one righteousness but lack the other, and therefore are accused of lawlessness.
"Unbelieving Jews might hope to fulfill righteousness and therefore say: if we have not fulfilled it until now, we shall certainly fulfill it.
"See then what the Apostle does. He proves that righteousness is one, and that legal righteousness is contained in righteousness by faith.
"Whoever has acquired righteousness by faith has also fulfilled legal righteousness. But whoever has rejected the former has been deprived of the latter as well.
"For if Christ is the end of the law, then whoever does not have Christ has no righteousness, even if he thinks he has it. But whoever has Christ has acquired everything.
"What did the law desire? To make man righteous. But it could not do this, because no one fulfilled the law.
"Such was the end of the law. Everything inclined toward this. For this everything was introduced: feasts, commandments, sacrifices, and all the rest, so that man might be justified through them.
"But Christ reached this goal more surely through faith. Therefore do not fear, says the Apostle: by approaching faith, you have acquired a much greater righteousness."