Psalm 60:9

Who will bring me into the strong city? who will lead me into Edom?

Who will bring me into the strong city?.... Which some understand of Rabbah of the Ammonites, which Joab besieged, and sent to David to come and take it in person, 2 Samuel 12:26. The Targum interprets it of Tyre, which was a strong fortified city, Ezekiel 26:4. It rather seems to be the same with Edom, or the metropolis of the Edomites; since it follows:

who will lead me into Edom? which was situated in the clefts of the rock, and on the height of the hill, Jeremiah 49:16; but is mystically to be understood of the city of Rome, the great and mighty city, as it is often called in the book of the Revelation, Revelation 11:8; whose destruction is certain, being predicted; and after which there have been desires raised in the hearts of God's people in all ages; and particularly just before the time God will put it into the hearts of the kings of the earth to burn it with fire; who are here represented by David, as desirous of entering into it in triumph to destroy it,

Revelation 17:16.