Jamieson, Fausset and Brown on Isaiah 37:24

24. said--virtually. Hast thou within thyself?

height--imagery from the Assyrian felling of trees in Lebanon (Is 14:8; 33:9); figuratively for, "I have carried my victorious army through the regions most difficult of access, to the most remote lands."

sides--rather, "recesses" [G. V. Smith].

fir trees--not cypresses, as some translate; pine foliage and cedars are still found on the northwest side of Lebanon [Stanley].

height of ... border--In 2Ki 19:23, "the lodgings of his borders." Perhaps on the ascent to the top there was a place of repose or caravansary, which bounded the usual attempts of persons to ascend [Barnes]. Here, simply, "its extreme height."

forest of ... Carmel--rather, "its thickest forest." "Carmel" expresses thick luxuriance (see on Is 10:18; Is 29:17).