Isaiah 2:2-4 says, speaking of the Lord’s first Advent, “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. 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. 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."
Micah 4:1-3 parallels this teaching, saying, “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. 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. 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.”
Premils are always thinking natural, physical, temporal and carnal. Amils see the movement away from the Old Testament shadow, picture and type reality to the New Testament spiritual substance, reality and fulfilment. Christ was always redirecting our eyes away from the natural to the spiritual, from the earthly to the heavenly, from the temporal to the eternal and from the visible to the invisible. The natural man is captivated with the natural, the earthly and the temporal the heavenly man is captivated with the supernatural, the heavenly and the eternal.
The old temporal earthly kingdom of Israel was merely a type of the new spiritual heavenly eternal kingdom that Christ was going to introduce at His first Advent. The whole old covenant structure was always going to be superseded by a better system. As you get into the New Testament you quickly realise that physical Jerusalem is no longer considered true Zion (or Sion). Under the new covenant, Zion is heavenly, spiritual and eternal not earthly, physical and temporal. The Old Testament was simply an imperfect type of the real.
These passages are telling us that Messiah would come and bring peace to His subjects. This would be performed through the Word of God going out of Zion to all nations in these last days. Christ did this. The Gentiles are now coming to the truth of God by their millions. Isaiah receives a pictorial vision of the approaching new covenant order, and the last days. It is given in a metaphorical style describing the incredible peace and reconciliation that comes through the success of the Gospel. The mountain of the Lord refers to the kingdom introduced by Christ. There is no more war there. Mountains in Scripture prophetically speak of kingdoms. That is the case in Isaiah 2 and Malachi 4. The peace described came with the earthly ministry of Christ.
God urges His people throughout the nations in the last days to stream to His holy mountain. This is obviously talking about an intimate spiritual place with Him, not a geographical location.
Psalm 24:3-4: “Who shall ascend into the hill (or mountain) of the LORD? or who shall stand in his holy place? He that hath clean hands, and a pure heart; who hath not lifted up his soul unto vanity, nor sworn deceitfully.”
Isaiah 11:9-10: “They shall not hurt nor destroy in all my holy mountain: for the earth shall be full of the knowledge of the LORD, as the waters cover the sea. And in that day there shall be a root of Jesse, which shall stand for an ensign of the people; to it shall the Gentiles seek: and his rest shall be glorious.”
Isaiah 65:25 describes, “The wolf and the lamb shall feed together, and the lion shall eat straw like the bullock: and dust shall be the serpent's meat. They shall not hurt nor destroy in all my holy mountain.”
This passage could well be a metaphor indicating the peace that exists within the kingdom of God. It can equally describe the undisturbed nature of the eternal state. It is a fact that many eternal truths are described in a parabolic sense in order to impress the great mystery of eternity to our finite mind.
This seems to symbolically depict the peace that Christ has introduced through the new covenant and which will be literally realized in the new heavens and new earth. The one thing it does not speak of is some supposed sin-cursed, goat-infested, death-blighted future millennial kingdom.