Micah 4:1-2 (ESV)
It shall come to pass in the latter days
that the mountain of the house of the Lord
shall be established as the highest of the mountains,
and it shall be lifted up above the hills;
and peoples shall flow to it,
 and many nations shall 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 his ways
and that we may walk in his paths.”
For out of Zion shall go forth the law,
and the word of the Lord from Jerusalem.
The mountain of God shall be the highest mountain, not because God is going to make it bigger than it was in the Micah’s day, but because it will be the mountain that all peoples of the earth flock to, to worship and serve their God (verse 2). It shall be a great mountain because the salvation of the peoples of the world is symbolized by it.
People from all the nations of the earth shall want to know God because of His great grace. The work of Jesus Christ has a power that will reach every corner of the globe because the whole globe is His. People from all over the world call Jerusalem their spiritual home because of the work of Christ.
This does not mean that we are loyal to a political entity. Not at all. It means that as the place where Jesus lived and died and rose from the dead is the place where our salvation was accomplished, we shall dwell there. There shall be peace (verse 3) and true freedom (verse 4). We shall dwell in the New Jerusalem, not in the current city liberated through political power but by the return of the Son of God.
It would be a cheap counterfeit theology that reduced this to political power and safety alone. It is far, far greater than that. And it comes by faith in the Son of God. God, through Christ, has done a truly stupendous thing. Let us not cheapen it with our puny minds with their puny understanding of the accomplishments of the Gospel. Let us stand in awe of such texts of Scripture and marvel at what God is doing and will continue to do until that great day.