Matthew Henry Commentary Micah 3:9-12

"Hear this, I pray you, ye heads of the house of Jacob, and rulers of the house of Israel, that abhor justice, and pervert all equity. They build up Zion with blood, and Jerusalem with iniquity. The heads thereof judge for reward, and the priests thereof teach for hire, and the prophets thereof divine for money: yet they lean upon Jehovah, and say, Is not Jehovah in the midst of us? no evil shall come upon us. Therefore shall Zion for your sake be plowed as a field, and Jerusalem shall become heaps, and the mountain of the house as the high places of a forest." — Micah 3:9-12 (ASV)

Zion's walls owe no thanks to those who build them up with blood and iniquity. The sin of man does not work the righteousness of God. Even when men do that which is in itself good, but do it for filthy lucre, it becomes an abomination both to God and man.

Faith rests in the Lord as the soul's foundation: presumption only leans upon the Lord as a prop and would use him to serve its own purposes.

If men having the Lord among them will not keep them from doing evil, it can never secure them from suffering evil for doing so. See the doom of wicked Jacob; Therefore shall Zion for your sake be ploughed as a field.

This was exactly fulfilled at the destruction of Jerusalem by the Romans, and is so to this day. If sacred places are polluted by sin, they will be wasted and ruined by the judgments of God.