They are one and the same. Abraham walked in Yahweh's laws that were passed down verbally. They were later written down by Moses with certain additions concerning the temple, etc. Do you actually believe that Moses came up with those laws?
Have you been grafted into the natural olive tree of Israel? If so, then you are an Israelite through faith in Yeshua and no longer a Gentile.
19 What purpose then does the law serve? It was added because of transgressions, till the Seed should come to whom the promise was made; and it was appointed through angels by the hand of a mediator.
Galatians 3;19
By saying added, the Holy Spirit is indicating that the law was a part that was being added to "something else'.
By saying until, the Holy Spirit is indicating that the law that was added, was temporary.
The Seed has fulfilled the law of Moses, therefore it has vanished away, in the light of the One whose shadow was seen in the Law.
We have been grafted into natural Olive Tree and are Partakers of the Commonwealth of Israel.
I am supported by the root, which is Christ, who is YHWH!
The man Israel was not under the law of Moses.
If you can show me where Abraham, Issac or Israel kept the sabbath, whereby they stoned to death any of their family members for not keeping the sabbath, then we can start from there.