2 Kings 18:21

Now, behold, thou trustest upon the staff of this bruised reed, even upon Egypt, on which if a man lean, it will go into his hand, and pierce it: so is Pharaoh king of Egypt unto all that trust on him.

Now, behold, thou trustest upon the staff of this bruised reed, even upon Egypt, х haqaaneh (H7070) haaraatsuwts (H7533), broken papyrus; Septuagint, teen kalamineen teen tethlasmeneen, bruised, shattered reed; Vulgate, quassatus calamus]. The metaphor is founded upon the nature of a reed, which being slender and brittle, is liable to be easily broken, while the sharp jagged point of the stump is apt to pierce the hand of one that leans upon it. The metaphor admirably represents the idea which Rab-shakeh wished to convey, of an ally who was not only weak and unable to contribute much substantial succour, but would prove eventually "a thorn in the flesh" of the king who joined in a friendly league with him; and it was all the more appropriate and significant in this case, as the papyrus reeds, which grew so luxuriantly on the banks of the Nile, formed a characteristic production of Egypt, rendering the reference to that country unmistakeable, even had the name of Pharaoh not been expressly mentioned at the close of the sentence. Moreover, Egypt had been weakened by Sargon, father of Sennacherib, (Isaiah 20:1.)