Jeremiah 51:58

And not only are the defenders of the city to fall, but the strong ramparts also, the broad walls and the lofty towers, are to be destroyed. The adjective הרחבה is joined in the singular with the plural חמות, because the complex notion of the walls of Babylon, denoted by the latter word, is viewed as a unity; cf. Ewald, 318. ערר, in Hithpael, means "to be made bare," i.e., to be destroyed down to the ground; the inf. abs. Pilel is added to intensify the expression. Regarding the height and breadth and the extent of the walls of Babylon, cf. the collection of notices by the old writers in Duncker's Gesch. des Alt. i. S. 856ff. According to Herodotus (i. 178f.), they were fifty ells "royal cubits," or nearly 85 feet thick, and 200 ells 337 1/2 feet high; Ctesias assigns them a height of 300 feet, Strabo that of 50 ells cubits, or 75 feet, and a breadth of 32 feet. On this Duncker remarks: "The height and breadth which Herodotus gives to the walls are no doubt exaggerated. Since the wall of Media, the first line of defence for the country, had a height of 100 feet and a breadth of 20 feet, and since Xenophon saw in Nineveh walls 150 feet in height, we shall be able with some degree of certainty to assume, in accordance with the statement of Pliny (vi. 26), that the wall of Babylon must have had a height of 200 feet above the ditch, and a proportionate breadth of from 30 to 40 feet. This breadth would be sufficient to permit of teams of four being driven along the rampart, between the battlements, as Herodotus and Strabo inform us, without touching, just as the rampart on the walls of Nineveh is said to have afforded room for three chariots." (Note: For details as to the number of the walls, and statistics regarding them, see Duncker, S. 858, Anm. 3, who is inclined to unde…

The prophet, in this chapter, goes on with the prediction of Babylon's fall, to which other prophets also bore witness. He is very copious and lively in describing the foresight God had given him of it, for the encouragement of the pious captives, whose deliverance depended upon it and was to be the result of it. Here is, I. The record of Babylon's doom, with the particulars of it, intermixed with the grounds of God's controversy with her, many aggravations of her fall, and great encouragements given thence to the Israel of God, that suffered such hard things by her (v. 1-58). II. The representation and ratification of this by the throwing of a copy of this prophecy into the river Euphrates (Jer 51:59-64).