Lift ye up a banner upon the high mountain,.... Or "upon the mountain Nishphah"; some high mountain in Media or Persia, proper to set a standard on, or erect a banner for the gathering men together, to enlist themselves as soldiers, and so form an army to march into the land of Chaldea.
Vitringa thinks there may be an allusion to the mountain Zagrius, which divides Media and Persia from Assyria, mentioned by Strabo . Or "upon a high mountain"; any high mountain fit for such a purpose; or "against the high mountain", as some read it; meaning Babylon, called a mountain, Jer 51:25 not because of its situation, for it was in a plain; but because of its eminence above other cities and states.
The Targum is,"against the city that dwells securely, lift up a sign;''a token of war, proclaim war against it, that lives at ease, and is in peace; and so the word is used in the Talmudic language, as Kimchi observes; and to this agrees Jarchi's note,"to gather against the mountain that is quiet, and trusts in its tranquillity, lift up a banner to the nations.'
'Exalt the voice unto them; the Medes, mentioned by name in Isa 13:17 such as were within call, or were gathered together by the lifting up of the banner; such were to be urged with great vehemency to enlist themselves, and engage in a war against Babylon:shake the hand; beckon with it to them that are afar off, that cannot hear the voice:that they may go into the gates of the nobles; that dwell in the city of Babylon, where they might expect to find rich plunder; though some understand this of the nobles or princes of the Medes and Persians, as Kimchi observes, that should enter through the gates of Babylon into the city; and by others it is interpreted of the soldiers coming to the doors of the leaders or generals of the army, to give in their names, and enlist themselves in their service; which well agrees with what goes before.
Geograph. l. 11. p. 359.