And many people shall go and say, Come, 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.
All Commentaries on Isaiah 2:3 Go To Isaiah 2
Eusebius of Caesarea
AD 339
What can this law proceeding from Zion, which is different from what was made law by Moses in the desert at Mount Sinai, be but the word of the gospel through our Savior Jesus Christ which proceeds from Zion through all the nations? For clearly it was in Jerusalem and Mount Zion, where our Savior and Lord lived and taught, that the law of the new covenant originated and from which it proceeded to all people.