Augustine of Hippo : In the words of this prophet, these two things are distinguished and set forth with sufficient explicitness, that God does not require these sacrifices for their own sakes, and that He does require the sacrifices which they symbolize. In the epistle entitled "To the Hebrews" it is said, "To do good and to communicate, forget not: for with such sacrifices God is well pleased." And so, when it is written, "I desire mercy rather than sacrifice," nothing else is meant than that one sacrifice is preferred to another; for that which in common speech is called sacrifice is only the symbol of the true sacrifice. Now mercy is the true sacrifice, and therefore it is said, as I have just quoted, "with such sacrifices God is well pleased." All the divine ordinances, therefore, which we read concerning the sacrifices in the service of the tabernacle or the temple, we are to refer to the love of God and our neighbor. For "on these two commandments," as it is written, "hang all the law and the prophets." — City of God 10.5 John Chrysostom : "But to do good and to communicate forget not." I speak not merely with reference to the brethren present, but to those absent also. But if others have plundered your property, display your hospitality out of such things as ye have. What excuse then shall we have henceforward, when they, even after the spoiling of their goods, were thus admonished? — Homily on Hebrews 33 Oecumenius : "Do not forget the good deeds and the fellowship." Paul speaks of good deeds and fellowship as the same. "God is pleased." That is, He is pleased; for the term "is pleased" [εὐαρεστεῖται] indicates to be well-pleased. Therefore, it is necessary not only to offer the fruit of the lips, but also such sacrifices, like those of thanksgiving and good deeds. For the grateful person, it is evident that he is also generous, knowing what he is worthy of. — The Pseudo-Oecumenian Catena on Hebrews