Hi Meltzerboy.
These are only my opinions:
To the first question -
My first question concerns whether Christians are obligated to believe the Torah Law of the Hebrew Bible was divinely inspired in order to believe that Jesus fulfilled the Law? Or can Christians (let’s say Catholics) believe only that Jesus fulfilled the Law without necessarily believing in its direct transmission from G-d to Moses? Some Jews don’t even believe in the latter, and some biblical historians have their doubts…
… I would say yes . The reasoning works a little better if it is taken in several steps. First here are a couple of definitions from one of the foremost catechists of our day, Father John Hardon, S.J. - from his
Modern Catholic Dictionary
PENTATEUCH. The first five books of the Bible taken collectively, that is, Genesis, Exodus, Leviticus, Numbers, and Deuteronomy, written from about 1400 to 1300 B.C. The name may be traced to Origen (A.D. 254). A decision of the Biblical Commission (June 27, 1906) stated that Moses was the principal and inspired author of the Pentateuch and that the books were finally published under his name. But in 1948 the secretary- of the Pontifical Biblical Commission acknowledged that “today there is no longer anyone who questions the existence of sources used in the composition of the Pentateuch or who does not admit the progressive accretion of Mosaic laws due to the social and religious conditions of later times.”
MOSAIC LAW. The body of civil, moral, and religious legislation found in the last four books of the Pentateuch and traditionally ascribed to Moses. The foundation of this law is the Decalogue (Exodus 20),and its center is the Book of the Covenant (Exodus 20-23). The civil legislation is mainly in Exodus (18-23), and Deuteronomy (16-26). The moral laws are in Exodus (20-23), supplemented by Leviticus (11-20) and Deuteronomy (5). The religious and ceremonial precepts are in Exodus (25-30) and especially Leviticus (1-27). Compared with similar laws in other nations of that time, the Mosaic code is vastly superior by reason of its strong monotheism, its proclamation of God as the only source and final sanction of all laws, and from its summation of the whole law in the love of God and of neighbor .
If we look at that last sentence in the quote, we would have to say that there can practically be no question that the Mosaic Law is divinely inspired.
Now, one more definition by Father Hardon - which pretty well eliminates the possibility of any doubt.
TORAH. 1. the first five books of the Old Testament: Genesis, Exodus, Leviticus, Numbers, and Deuteronomy; 2. the entire body of Jewish law revealed by Yahweh and interpreted and taught by priests, prophets, and sages.
Here’s one more thing concerning how Catholics view the Torah/Pentateuch overall. There is a principle :
“lex orandi lex credendi” , loosely translated" the law of prayer is the law of belief" , or “the Church prays as She believes” . Here’s how Father Hardon puts it:
LEX ORANDI. Name of the axiom of Pope St. Celestine I (422-32), “Legem credendi statuit lex orandi” (The rule of prayer determines the rule of faith). By this is meant that the Church’s liturgy is the most effective means of preserving and interpreting the true faith.
Keeping in mind now that our Liturgy is the most effective means of interpreting the true faith, have a look at this excerpt below from
Eucharistic Prayer I - a prayer that is central to the Mass. It is also known as the *Roman Canon *and was the only Eucharistic prayer used by the Church for (I believe somewhere in the vicinity of ) 1600 years, up until the early 1960’s. Now there are 4 main Eucharistic prayers with several others. But the
Roman Canon/Eucharistic Prayer I has always ranked first . I’ve highlighted the parts most pertinent to your question:
EUCHARISTIC PRAYER I
(THE ROMAN CANON)
- Be pleased to look upon these offerings
with a serene and kindly countenance,
and to accept them,
as once you were pleased to accept
the gifts of your servant Abel the just,
the sacrifice of Abraham, our father in faith,
and the offering of your high priest Melchizedek,
a holy sacrifice, a spotless victim.
94.
Bowing, with hands joined, he continues:
In humble prayer we ask you, almighty God:
command that these gifts be borne
by the hands of your holy Angel
to your altar on high
in the sight of your divine majesty,
so that all of us, who through this participation at the altar
receive the most holy Body and Blood of your Son,
He stands upright again and signs himself with the Sign of the Cross, saying:
may be filled with every grace and heavenly blessing.
He joins his hands.
(Through Christ our Lord. Amen.)
… we pray as we believe .
For your second question, the answer isn’t totally cut & dry . Sections 577-582 of the Catechism of the Catholic Church provide a fair overview of what is meant by Christ fulfilling the law.
This link should put you right on that page . Almost that entire page is pertinent to your question.
… hope it helps.