For he saith - This verse, and the subsequent verses to Isaiah 10:11, contain the vaunting of the king of Assyria, and the descriptions of his own confidence of success.
Are not my princes altogether kings? - This is a confident boast of his “own” might and power. His own dominion was so great that even his princes were endowed with the ordinary power and “regalia” of kings. The word “princes,” may here refer either to those of his own family and court - to the satraps and officers of power in his army, or around his throne: or more probably, it may refer to the subordinate governors whom he had set over the provinces which he had conquered. ‘Are they not clothed with royal power and majesty? Are they not of equal splendor with the other monarchs at the earth?’ How great, then, must have been his “own” rank and glory to be placed “over” such illustrious sovereigns! It will be recollected, that a common title which oriental monarchs give themselves, is that of King of kings; see Ezekiel 26:7; Daniel 2:37; Ezra 7:12. The oriental princes are still distinguished for their sounding titles, and particularly for their claiming dominion over all other princes, and the supremacy over all other earthly powers.