Charles Ellicott Commentary Isaiah 36:5-6

"I say, [thy] counsel and strength for the war are but vain words: now on whom dost thou trust, that thou hast rebelled against me? Behold, thou trustest upon the staff of this bruised reed, even upon Egypt, whereon if a man lean, it will go into his hand, and pierce it: so is Pharaoh king of Egypt to all that trust on him." — Isaiah 36:5-6 (ASV)

I have counsel and strength for war ... — Reports of Hezekiah’s speech, probably also of his negotiations with Egypt, had reached the ears of the Assyrian king. So Sennacherib, in his inscriptions, speaks of “the king of Egypt as a monarch who could not save those who trusted in him” (Smith, Assyrian Canon). The Pharaoh in this case was Shabatoka, or Sabaco II., the father of the Tir-hakah of Isaiah 37:9, one of the Ethiopian dynasty that reigned in Egypt from B.C. 725-665.