Tom,
You are arguing like a protestant - ignoring what I say and diving off somewhere else, pulling a quote out of context.
At the beginning of this discussion I said:
Then the quote from The Catechism of the Council of Trent (Ten Commandments Introduction)
But, lest the people, aware of the abrogation of the Mosaic Law, may imagine that the precepts of the Decalogue are no longer obligatory…..
The Mosaic Law is abrogated. That is what Pope Pius XII said in the quote I gave.
This is what scripture says:
Are you unaware, brothers (for I am speaking to people who know the law [i.e. Jews]), that the law has jurisdiction over one as long as one lives? Thus a married woman is bound by law to her living husband; but if her husband dies, she is released from the law in respect to her husband. Consequently, while her husband is alive she will be called an adulteress if she consorts with another man. But if her husband dies she is free from that law, and she is not an adulteress if she consorts with another man.
In the same way, my brothers, you also were put to death to the law through the body of Christ, so that you might belong to another, to the one who was raised from the dead in order that we might bear fruit for God. For when we were in the flesh, our sinful passions, awakened by the law, worked in our members to bear fruit for death. But now we are released from the law, dead to what held us captive, so that we may serve in the newness of the spirit and not under the obsolete letter. (Rom 7:1-6)
We [Jews] are put to death to the Law
We [Jews] are released from the Law
Note particularly that this is particularly relevant because God considered himself “married” to Israel. When Jesus died the Covenant ended and Jesus was free to take a new bride – the Church.
But now in Christ Jesus you who once were far off have been brought near in the blood of Christ. For he is our peace, who has made us both one, and has broken down the dividing wall of hostility, by abolishing in his flesh the law of commandments and ordinances, that he might create in himself one new man in place of the two, (Eph 2:13-15)
The Law has been abolished.
Col 2 says much the same:
And you, who were dead in trespasses and the uncircumcision of your flesh, God made alive together with him, having forgiven us all our trespasses, having cancelled the bond which stood against us with its legal demands; this he set aside, nailing it to the cross. (Col 2:14)
Does this include the Ten Commandments? Yes, because the Law in indivisible.
For whoever keeps the whole law, but falls short in one particular, has become guilty in respect to all of it. For he who said, “You shall not commit adultery,” also said, “You shall not kill.” Even if you do not commit adultery but kill, you have become a transgressor of the law. (Jas 2:10-11)
There are more scriptures I could quote on this.
BUT, as I have (I thought) been trying to point out the Ten Commandments are a codification of God’s eternal moral law, also called natural law. Abolishing the old Law does not abolish God’s moral laws.
In the catechism of Trent the section on the third commandment say this:
The other Commandments of the Decalogue are precepts of the natural law, obligatory at all times and unalterable. Hence, after the abrogation of the Law of Moses, all the Commandments contained in the two tables are observed by Christians, not indeed because their observance is commanded by Moses, but because they are in conformity with nature which dictates obedience to them.
The part I have emboldened is saying the same as the quote I gave from the Introduction section
It is most certain that we are not bound to obey the Commandments because they were delivered by Moses, but because they are implanted in the hearts of all, and have been explained and confirmed by Christ our Lord.
And the quote I gave earlier (note the emboldened)
But, lest the people, aware of the abrogation of the Mosaic Law, may imagine that the precepts of the Decalogue are no longer obligatory…
The precepts of the Decalogue are obligatory insofar as they express God’s moral law which lies behind them.
We therefore have to obey the moral content of the Decalogue but, as I have already stated, as a legal code they were never applicable to Gentiles and have been abolished.
Not all of the Decalogue are moral commands and we have no obligation to obey them.
This differentiation between the Ten Commandments as Law for the Israelites under the Sinai Covenant and the Ten Commandments as a summary (for the most part) of God’s eternal moral laws is important.
Now let us turn to the Catechism before the quote you gave (para 2068) because that is important for the context of 2068.
There is a Section called The Moral Law. Within that there are several sections
The Natural Moral Law (paras 1954 to 1960)
1956 The natural law, present in the heart of each man and established by reason, is universal in its precepts and its authority extends to all men…..
It then moves on to The Old Law (1961 to 1964)
1962 The Old Law is the first stage of revealed Law. Its moral prescriptions are summed up in the Ten Commandments. The precepts of the Decalogue lay the foundations for the vocation of man fashioned in the image of God; they prohibit what is contrary to the love of God and neighbour and prescribe what is essential to it. the Decalogue is a light offered to the conscience of every man to make God's call and ways known to him and to protect him against evil:
The next section is The New Law or the Law of the Gospel (para 1965 to1974)
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…….
You see the context of this is all about the Decalogue as moral precepts. As the catechism of Trent says they “render more luminous that divine light by which the depraved morals and long continued perversity of man had at that time almost obscured”.