Jeremias 31:33

having bestowed on us the truly great, divine, and inalienable inheritance of the Father, deifying man by heavenly teaching, putting His laws into our minds, and writing them on our hearts. What laws does He inscribe? “That all shall know God, from small to great;” and, “I will be merciful to them,” says God, “and will not remember their sins.” Let us receive the laws of life, let us comply with God’s expostulations; let us become acquainted with Him, that He may be gracious. And though God needs nothing let us render to Him the grateful recompense of a thankful heart and of piety, as a kind of house-rent for our dwelling here below.

In Jeremiah: “Behold, the days come, saith the Lord, and I will complete for the house of Israel, and for the house of Judah, a new testament, not according to the testament which I ordered with their fathers in that day in which I took hold of their hands to bring them out of the land of Egypt, because they remained not in my testament, and I disregarded them, saith the Lord: Because this is the testament which I will establish with the house of Israel after those days, saith the Lord: I will give them my laws, and into their minds I will write them; and I will be to them for a God, and they shall be to me for a people; and they shall not teach every man his brother, saying, Know the Lord: for all shall know me, from the least even to the greatest of them: for I will be merciful to their iniquities, and will no more be mindful of their sins.”

In the cxth Psalm: “The fear of the Lord is the beginning of wisdom.” Of the same thing in the Wisdom of Solomon: “The beginning of wisdom is to fear God.” Also in the Proverbs of the same: “Blessed is the man who reverences all things with fear.” Of the same thing in Isaiah: “And upon whom else will I look, except upon him that is lowly and peaceful, and that trembleth at my words?” Of this same thing in Genesis: “And the angel of the Lord called him from heaven, and said unto him, Abraham, Abraham: and he said, Here am I. …

Observe this also in that testimony which was given by the prophet on this subject in the clearest way: “Behold, the days come, saith the Lord, that I will consummate a new covenant with the house of Israel, and with the house of Judah; not according to the covenant which I made with their fathers, in the day that I took them by the hand, to bring them out of the land of Egypt. Because they continued not in my covenant, I also have rejected them, saith the Lord. But this shall be the covenant that I will make with the house of Israel; After those days, saith the Lord, I will put my law in their inward parts, and write it in their hearts; and I will be their God, and they shall be my people. …

The one was therefore old, because the other is new. But whence comes it that one is old and the other new, when the same law, which said in the Old Testament, “Thou shalt not covet,” is fulfilled by the New Testament? “Because,” says the prophet, “they continued not in my covenant, I have also rejected them, saith the Lord.” It is then on account of the offence of the old man, which was by no means healed by the letter which commanded and threatened, that it is called the old covenant; whereas the other is called the new covenant, because of the newness of the spirit, which heals the new man of the fault of the old. …

What then is God’s law written by God Himself in the hearts of men, but the very presence of the Holy Spirit, who is “the finger of God,” and by whose presence is shed abroad in our hearts the love which is the fulfilling of the law, and the end of the commandment? Now the promises of the Old Testament are earthly; and yet (with the exception of the sacramental ordinances which were the shadow of things to come, such as circumcision, the Sabbath and other observances of days, and the ceremonies of certain meats, and the complicated ritual of sacrifices and sacred things which suited “the oldness” of the carnal law and its slavish yoke) it contains such precepts of righteousness as we are even now taught to observe, which were especially expressly drawn out on the two tables without figure or shadow: for instance, “Thou shalt not commit adultery,” “Thou shalt do no murder,” “Thou shalt no …

He then went on to state the reward: “I will be their God, and they shall be my people.” This corresponds to the Psalmist’s words to God: “It is good for me to hold me fast by God.” “I will be,” says God, “their God, and they shall be my people.” What is better than this good, what happier than this happiness, to live to God, to live from God, with whom is the fountain of life, and in whose light we shall see light? Of this life the Lord Himself speaks in these words: “This is life eternal that they may know Thee the only true God, and Jesus Christ whom Thou hast sent,”, that is, “Thee and Jesus Christ whom Thou hast sent,” the one true God. …

I beg of you, however, carefully to observe, as far as you can, what I am endeavouring to prove with so much effort. When the prophet promised a new covenant, not according to the covenant which had been formerly made with the people of Israel when liberated from Egypt, he said nothing about a change in the sacrifices or any sacred ordinances, although such change, too, was without doubt to follow, as we see in fact that it did follow, even as the same prophetic scripture testifies in many other passages; but he simply called attention to this difference, that God would impress His laws on the mind of those who belonged to this covenant, and would write them in their hearts, whence the apostle drew his conclusion, “not with ink, but with the Spirit of the living God; not in tables of stone, but in fleshy tables of the heart;” and that the eternal recompense of this righteousness was not …

What then could the apostle have meant to imply by, after checking the boasting of the Jews, by telling them that “not the hearers of the law are just before God, but the doers of the law shall be justified,”, immediately afterwards speaking of them “which, having not the law, do by nature the things contained in the law,” if in this description not they are to be understood who belong to the Mediator’s grace, but rather they who, while not worshipping the true God with true godliness, do yet exhibit some good works in the general course of their ungodly lives? Or did the apostle perhaps deem it probable, because he had previously said that “with God there is no respect of persons,” and had afterwards said that “God is not the God of the Jews only, but also of the Gentiles,”, that even such scanty little works of the law, as are suggested by nature, were not discovered in such as receive …

And this one may perceive was the case, not of the saints in the Old Testament only, but also of those in the New. For neither to the apostles did God give anything in writing, but instead of written words He promised that He would give them the grace of the Spirit: for “He,” saith our Lord, “shall bring all things to your remembrance.” And that thou mayest learn that this was far better, hear what He saith by the Prophet: “I will make a new covenant with you, putting my laws into their mind, and in their heart I will write them,” and, “they shall be all taught of God.” And Paul too, pointing out the same superiority, said, that they had received a law “not in tables of stone, but in fleshy tables of the heart.”

The number of the Apostles has been enlarged for us by this our late Apostle being reckoned among their company. These Holy ones have drawn to themselves one of like conversation; those athletes a fellow athlete; those crowned ones another crowned like them; the pure in heart one chaste in soul: those ministers of the Word another herald of that Word. Most blessed, indeed, is our Father for this his joining the Apostolic band and his departure to Christ. Most pitiable we! for the unseasonableness of our orphaned condition does not permit us to congratulate ourselves on our Father’s happy lot. For him, indeed, better it was by his departure hence to be with Christ, but it was a grievous thing for us to be severed from his fatherly guidance. Behold, it is a time of need for counsel; and our counsellor is silent. War, the war of heresy, encompasses us, and our Leader is no more. …

Set before you the blessed Mary, whose surpassing purity made her meet to be the mother of the Lord. When the angel Gabriel came down to her, in the form of a man, and said: “Hail, thou that art highly favored; the Lord is with thee,” she was terror-stricken and unable to reply, for she had never been saluted by a man before. But, on learning who he was, she spoke, and one who had been afraid of a man conversed fearlessly with an angel. Now you, too, may be the Lord’s mother. …