"The Torah Shall Go Forth": But Which Torah?

Micah 4:1-3"1 But in the last days it shall come to pass, that the mountain of the house of the Lord shall be established in the top of the mountains, and it shall be exalted above the hills; and people shall flow unto it.
2 And many nations shall come, and say, Come, and let us go up to the mountain of the Lord, and to the house of the God of Jacob; and he will teach us of his ways, and we will walk in his paths: for the law shall go forth of Zion, and the word of the Lord from Jerusalem.3 And he shall judge among many people, and rebuke strong nations afar off; and they shall beat their swords into plowshares, and their spears into pruninghooks: nation shall not lift up a sword against nation, neither shall they learn war any more," (Micah 4:1-3). 

Isaiah 2:2-4"1 And it shall come to pass in the last days, that the mountain of the Lord's house shall be established in the top of the mountains, and shall be exalted above the hills; and all nations shall flow unto it.
3 And many people shall go and say, Come ye, and let us go up to the mountain of the Lord, to the house of the God of Jacob; and he will teach us of his ways, and we will walk in his paths: for out of Zion shall go forth the law, and the word of the Lord from Jerusalem.4 And he shall judge among the nations, and shall rebuke many people: and they shall beat their swords into plowshares, and their spears into pruninghooks: nation shall not lift up sword against nation, neither shall they learn war any more," (Isaiah 2:2-4).

In McKee's "One Law for All", he notes that "[t]he dispensational Bible Knowledge Commentary...actually claims [regarding Micah 4:1-3 and Isaiah 2:2-4] 'Law (...not the Mosaic Law) will be given in Zion," (pg. 118 of One Law for All) [emphasis added].

And, as all of us Messianics know, there are certain organizations in the Messianic movement that say Gentiles are only bound to the so-called "Noahide Laws" and not the Sinaitic Torah.

So which Torah will "go forth" from Zion?  The Noahide Law?  The Fourfold Decree of Acts 15?  Or is it really the Torah of Moses that goes forth?

Let's look at another passage in Isaiah to find out more:

Isaiah 56:6-7
"6...every one that keepeth the sabbath from polluting it, and taketh hold of my covenant;
7 Even them will I bring to my holy mountain, and make them joyful in my house of prayer", (Isaiah 56:6-7)

This tells us that only those that take hold of the Covenant and keep the Sabbath will be brought to the Temple.  Thus, Isaiah 56 informs us that the Gentiles in Micah 4 and Isaiah 2 are those Gentiles who have taken hold of the Covenant (and who keep Shabbat).

But now we have another question:  which Covenant will these Goyim be taking hold of?

The Shabbat is a good clue.  The Shabbat is a law found in both the Sinaitic Covenant and New Covenant (since the New Covenant includes the Torah of Moses).

So the answer to the question "which Torah goes forth from Zion?" must be:  the Torah of Moses.