Isaiah
Isaiah 13:2ESV·traditional attribution

On a bare hill raise a signal; cry aloud to them; wave the hand for them to enter the gates of the nobles.

John Calvin Reformed @genevareformer

2. Lift ye up a banner upon the high mountain. The word mountain contains a metaphor; for the discourse relates to Babylon, which, we know, was situated on a plain; but with a view to its extensive dominion, he has assigned to it an elevated situation, like a fortress set on high above all nations.

Matthew Henry Presbyterian @wholebiblehenry

The general title of this book was, The vision of Isaiah the son of Amoz, Isa 1:1. Here we have that which Isaiah saw, which was represented to his mind as clearly and fully as if he had seen it with his bodily eyes; but the particular inscription of this sermon is the burden of Babylon. 1.

Commenting on Isaiah 13:1-5

John Gill Reformed Baptist @doctorgill

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.