It’s not that that law is wrong; it’s simply that its incapable of justifying us-as if mere outward obedience-which can be nothing more then a pretense of righteousness-is all there is to it; God wants our hearts changed first of all. And this is why Jesus considered many of the Pharisees to be whited-washed tombs: clean on the outside while filthy on the inside. So Paul tells us in Rom 7 that the law is spiritual: “the law is holy, and the commandment is holy, righteous and good”, but that we’re not spiritual-we must become spiritual in order to become authentically just. This is the New Covenant. Paul still knows that we must obey, but out of love, molded into us by grace: God’s work, not ours except to the extent that we cooperate with Him in it.
**Let no debt remain outstanding, except the continuing debt to love one another, for whoever loves others has fulfilled the law. 9 The commandments, “You shall not commit adultery,” “You shall not murder,” “You shall not steal,” “You shall not covet,” and whatever other command there may be, are summed up in this one command: “Love your neighbor as yourself.” 10 Love does no harm to a neighbor. Therefore love is the fulfillment of the law. **Rom 13:8-10
The law was a teacher, one that taught us that we’re sinners, unable to consistently obey it as we should: in spirit and truth-while we’re still apart from-out of communion with-God. “Apart from Me you can do nothing” Jesus tells us in John 15:5. Anyway, there are many ways to explain the differences between the Old and New Covenants but the Catechism teaches it best:
**1963 According to Christian tradition, the Law is holy, spiritual, and good,14 yet still imperfect. Like a tutor15 it shows what must be done, but does not of itself give the strength, the grace of the Spirit, to fulfill it. Because of sin, which it cannot remove, it remains a law of bondage. According to St. Paul, its special function is to denounce and disclose sin, which constitutes a “law of concupiscence” in the human heart.16 However, the Law remains the first stage on the way to the kingdom. It prepares and disposes the chosen people and each Christian for conversion and faith in the Savior God. It provides a teaching which endures for ever, like the Word of God.
1965 The New Law or the Law of the Gospel is the perfection here on earth of the divine law, natural and revealed. It is the work of Christ and is expressed particularly in the Sermon on the Mount. It is also the work of the Holy Spirit and through him it becomes the interior law of charity: "I will establish a New Covenant with the house of Israel. . . . I will put my laws into their hands, and write them on their hearts, and I will be their God, and they shall be my people."19
1966 The New Law is the grace of the Holy Spirit given to the faithful through faith in Christ. It works through charity; it uses the Sermon on the Mount to teach us what must be done and makes use of the sacraments to give us the grace to do it:
If anyone should meditate with devotion and perspicacity on the sermon our Lord gave on the mount, as we read in the Gospel of Saint Matthew, he will doubtless find there . . . the perfect way of the Christian life. . . . This sermon contains . . . all the precepts needed to shape one’s life.20
1967 The Law of the Gospel “fulfills,” refines, surpasses, and leads the Old Law to its perfection.21 In the Beatitudes, the New Law fulfills the divine promises by elevating and orienting them toward the “kingdom of heaven.” It is addressed to those open to accepting this new hope with faith - the poor, the humble, the afflicted, the pure of heart, those persecuted on account of Christ and so marks out the surprising ways of the Kingdom.
1968 The Law of the Gospel fulfills the commandments of the Law. The Lord’s Sermon on the Mount, far from abolishing or devaluing the moral prescriptions of the Old Law, releases their hidden potential and has new demands arise from them: it reveals their entire divine and human truth. It does not add new external precepts, but proceeds to reform the heart, the root of human acts, where man chooses between the pure and the impure,22 where faith, hope, and charity are formed and with them the other virtues. The Gospel thus brings the Law to its fullness through imitation of the perfection of the heavenly Father, through forgiveness of enemies and prayer for persecutors, in emulation of the divine generosity.23
1970 The Law of the Gospel requires us to make the decisive choice between “the two ways” and to put into practice the words of the Lord.26 It is summed up in the Golden Rule, "Whatever you wish that men would do to you, do so to them; this is the law and the prophets."27
The entire Law of the Gospel is contained in the “new commandment” of Jesus, to love one another as he has loved us.28
1972 The New Law is called a law of love because it makes us act out of the love infused by the Holy Spirit, rather than from fear; a law of grace, because it confers the strength of grace to act, by means of faith and the sacraments; a law of freedom, because it sets us free from the ritual and juridical observances of the Old Law, inclines us to act spontaneously by the prompting of charity and, finally, lets us pass from the condition of a servant who “does not know what his master is doing” to that of a friend of Christ - “For all that I have heard from my Father I have made known to you” - or even to the status of son and heir.31**
Continued next post: