What does Ezekiel 38:1-12 mean?

The word of the LORD came to me: “Son of man, set your face toward Gog, of the land of Magog, the chief prince of Meshech and Tubal, and prophesy against him and say, Thus says the Lord GOD: Behold, I am against you, O Gog, chief prince of Meshech and Tubal. And I will turn you about and put hooks into your jaws, and I will bring you out, and all your army, horses and horsemen, all of them clothed in full armor, a great host, all of them with buckler and shield, wielding swords. Persia, Cush, and Put are with them, all of them with shield and helmet; Gomer and all his hordes; Beth-togarmah from the uttermost parts of the north with all his hordes—many peoples are with you. “Be ready and keep ready, you and all your hosts that are assembled about you, and be a guard for them. After many days you will be mustered. In the latter years you will go against the land that is restored from war, the land whose people were gathered from many peoples upon the mountains of Israel, which had been a continual waste. Its people were brought out from the peoples and now dwell securely, all of them. You will advance, coming on like a storm. You will be like a cloud covering the land, you and all your hordes, and many peoples with you. “Thus says the Lord GOD: On that day, thoughts will come into your mind, and you will devise an evil scheme and say, ‘I will go up against the land of unwalled villages. I will fall upon the quiet people who dwell securely, all of them dwelling without walls, and having no bars or gates,’ to seize spoil and carry off plunder, to turn your hand against the waste places that are now inhabited, and the people who were gathered from the nations, who have acquired livestock and goods, who dwell at the center of the earth.

English Standard Version (ESV)