Namely Deuteronomy and Leviticus.
Do they reflect flawless moral teaching or should they be read in a historical/cultural context of an imperfect, human society?
When Jesus speaks about divorce in the New Testament, he refers to Moses as having permitted divorce “out of the people’s hardness of heart”. This seems to say that the Law books should not be read as reflecting unchangeable moral theology. In fact I can’t see any other conceivable explanation. As a rabbi Jesus is quite plainly countermanding Moses (in itself incredibly gusty for the audience of 1st century Palestine) and saying that his judgement wasn’t good enough, and instead appealed to a further back source, hence Jesus’ remark concerning divorce, “In the beginning it was not such…”
The Law were tenants established through Moses & co., who were devout but fallible men (similar to how the Catholic Church doesn’t follow all of St Augustine’s ideas, even while nonetheless revering him for his contributions as a 4th century thinker).
Can anybody refer me to a good nihil obstat book that treats this subject?