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. And many nations shall come, and say, “Come, 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 between many peoples, and rebuke strong nations afar off; They shall beat their swords into plowshares, and their spears into pruning hooks; Nation shall not lift up sword against nation, neither shall they learn war any more.” (vv.1-3).
“In the last days,” meaning this has not yet happened. Micah is talking about how God is going to establish His throne upon the earth, and how the mountain of the house of the Lord is going to be established in Zion during the kingdom age, when Jesus comes and reigns again. "Then God shall give to Him the throne of David and He will order it and establish it in righteousness and in judgment from then and forever."
Micah then goes on to prophesy that the nations of the earth will come up to Jerusalem (for out of Zion will come the law of the Lord), "Come let’s go to Jerusalem and to the house of God, and He will teach us His ways.” Jesus will be there teaching the ways of the Father. And, “He shall judge among many people, He will rebuke strong nations afar off; and they shall beat their swords into plowshares, and their spears into pruning hooks: and nation shall not lift up a sword against nation, neither shall they learn war any more” (v.3).
Meaning, He will speak with authority, teaching truth; the law will go out from Zion rebuking strong nations far off; He will judge between peoples; and there will be no more war. He will be our defense, no need for military budgets. In that day every man will live in peace; no one will make man afraid (v.4).
Interestingly enough man has tried during his entire existence to accomplish this that, only to fail in every attempt. Without righteousness one can not rule righteously. Only Jesus, the “Prince of Peace” can bring everlasting peace. Only Jesus “Our Righteousness” can bring the righteous of "rule of law" to man. But that day is yet to come, and as Christians we look forward to His appearing.
The Truth: “Now it will come about that in the last days The mountain of the house of the Lord will be established as the chief of the mountains, and will be raised above the hills; And all the nations will stream to it. And many peoples will come and say, “Come, let us go up to the mountain of the Lord, to the house of the God of Jacob; That He may teach us concerning His ways and that we may walk in His paths.” (Isaiah 2:2-3)