My study of scripture indicates that God gave Israel special laws only for Israel. Torah WAS God's law for Israel. I do not have any idea about it being an expression. And where do you get that God's Law is spiritual and as such cannot be written????
What is process? Have you studied the two covenants? If you have then your conclusion is sure different than what I have gleaned. God took Moses aside and told him what the covenant He was about to give Israel was to be about.
Ex19:5 Now obey me completely. Keep my covenant. If you do, then out of all the nations you will be my special treasure. The whole earth is mine. 6 But you will be a kingdom of priests to serve me. You will be my holy nation.’ That is what you must tell the Israelites.” It was about how Israel was to live in the desert and in Canaan to become a Holy Nation. The new covenant is all about what we have to do to be ready to inherit Heaven.
What happened at Pentecost? Why did Jesus tell believers He would send the Comforter to be with us? It seems like this was a new phenomenon.
I make a distinction between God's Law and mans ability to articulate that Law; the law being spiritual cannot be replicated in inferior human language. None the less God gives instruction. Israels problem is the never understood (except for some individual cases) what was required of them.
Regarding what scripture indicates to you I agree and disagree; the Law, Covenant involving the Kingdom of God; the law being mans responsibilities in that covenant, yet the law was not uniquely for Israel:
Leviticus 24:22 (NKJV)
22 You shall have the same law for the stranger and for one from your own country; for I
am the LORD your God.' "
Exodus 12:48 (NKJV)
48 And when a stranger dwells with you
and wants to keep the Passover to the LORD, let all his males be circumcised, and then let him come near and keep it; and he shall be as a native of the land. For no uncircumcised person shall eat it.
These are TYPES and the NT anti-types are the same in principle; the New covenant is made with the remnant that came out of the lost sheep of Israel (a little over hundred I believe) and their descendants and of course any gentiles who dwelt with them.
The process I had in mind was for the OT TYPE, the Priest had to wash the sin off his hands each time he performed a priestly duty; in the Anti-type the NT priest is baptised once for all time. Same Law different process.
I certainly do glean differently to you. God said, I am going to build a house, the House of Israel; The woman in Rev12:1 is the house that God built; but the House is still under construction The NT church is the New Jerusalem.
Exodus 19:5-6 (NKJV)
5 Now therefore, if you will indeed obey My voice and keep My covenant, then you shall be a special treasure to Me above all people; for all the earth
is Mine.
6 And you shall be to Me a kingdom of priests and a holy nation.' These
are the words which you shall speak to the children of Israel."
For the literalist, these verse contain a contradiction; I says all of Israel are priests, however in Hebrews it is stated that the Law had to be changed for Jesus to be a priest because he wasn't a Levite.
I do not have a problem with new phenomenon, in the context that God does not change; I see the OT church as caterpillars and the NT church as butterfly, but still the same genus.