YES... God truly did give the Law to Moses.... It was given 1 letter at a time... It IS holy!
We also have to remember that Jesus himself declared that the Law is not DONE yet....
and that the Lawless would never inherit HIS Kingdom!
Over and over throughout the last 2,000 years - Man has been saved by provisions in the Jewish Law... Plagues were STOPPED when we followed the requirements for Washing and Purification..... Diseases were stopped when we followed the LAW and stopped being sexually promiscuous..... Parasites and internal worms were stopped when we followed the LAW - and stopped eating Unclean food before we knew about "Food safety"..... Medical procedures were made safe when we followed the provisions for Priestly washing.....
The LAW is not done yet either.... Wanna bet that the solution in the future to decontaminating after some gigantic Nuclear war or stopping some gigantic NEW plague will be miraculously found in the Law.... just like every other time.....
BUT... Purity of the physical body is NOT purity of the Soul before God....
You are NOT made Righteous before God in the Spiritual sense by following the 613 Mitzvot....
This is NOT a New Testament idea either....
Look at Isaiah 6:5-7
I am a man of Unclean lips that dwells among Unclean people....
God's angel took the coal out of the fire and struck his lips - and he was cleansed SPIRITUALLY....
His physical body was not purified... His SOUL was purified!
Look at Habakuk 2:4
Behold the Proud, His Soul is not upright within him...
BUT The Just shall live by his Faith!
Look at Elijah eating the food (trash) brought to him by the Ravens (Unclean bird) in a Gentile country (Unclean place) - 1st kings 17...... He was UNCLEAN by the Law - you can't eat roadkill and Trash collected by unclean birds in an unclean country and dropped in the dirt - and maintain Levitical Purity.... Yet he was Righteous before God!
It's just EXPLAINED and codified in the New Testament...
That OBEDIENCE to God trumps EVERYTHING else..... That Freedom in Christ allows us to minister to people who could NEVER be ministered to by those following the "Law"...... A Jewish priest cannot Minister to someone who HAS leperosy because that Leprosy may make HIM unclean.... A priest involved with Temple service CANNOT enter the home of a dead man - because he is made unclean for temple service..... A practicing Orthodox Jew cannot eat at the home of a Gentile - because their food may have been offered to Idols....
Luke 10:30-37 - The "Good Samaritan"..... The Levite and the Priest could NOT minister to the Wounded man - the contact with blood would make THEM unclean! They did not KNOW whether he was a Gentile Idolater or a Jew - so that would make them Unclean... He may DIE in their presence - which would make them Unclean.... They COULD NOT DO the good deed because it would make them Law Breakers!
This is why we Beg God "Write your LAW on our Hearts" - but we do not explicitly follow the Law in search of Righteousness....
Thanks
Mark 7:15 There is nothing outside a person that by going into him can defile him, but the things that come out of a person are what defile him