Nahum 2:6

“The gates of the rivers shall be opened, etc.] Of Diava and Adiava, or Lycus and Caprus, between which, according to some writers,f57 Nineveh was situated; or the gates of the city, which lay nearest to the river Tigris, are meant; or that river itself, the plural for the singular, which overflowing, broke down the walls of the city for two and a half miles, and opened a way for the Medes and Chaldeans to enter in; of which (see Na 1:8): and the palace shall be dissolved; by the inundation, or destroyed by the enemy; meaning the palace of the king, which might be situated near the river; or the temple of Nisroch the Assyrian deity, or Jupiter Belus; for the same wordf58 signifies a temple as…”

“The gates of the rivers shall be opened, and the palace shall be disolved - All gives way in an instant at the will of God; the strife is hushed; no more is said of war and death; there is no more resistance or bloodshed; no sound except the wailing of the captives, the flight of those who can escape, while the conquerors empty it of the spoil, and then she is left a waste. The swelling of the river and the opening made by it may have given rise to the traditional account of Ctesias, although obviously exaggerated as to the destruction of the wall. The exaggerated character of that tradition is not inconsistent with, it rather implies, a basis of truth. It is inconceivable that it should…”

“The gates - Of the city toward the river. The rivers - Of the Tigris, upon which Nineveh stood. Dissolved - While the Chaldeans besieged Nineveh, a mighty deluge overthrew the walls of Nineveh, by the space of twenty furlongs, through which breach the besiegers made their entrance. Dissolved - As if melted, it shall drop to pieces. Nahum 2:7”

“gates: Isa 45:1, Isa 45:2 dissolved: or, molten, Pe2 3:10, Pe2 3:11 Nahum 2:7”