2 Kings 18:19 (KJV)

And the king of Assyria sent Tartan and Rabsaris and Rab–shakeh from Lachish to king Hezekiah with a great host against Jerusalem. And they went up and came to Jerusalem. And when they were come up, they came and stood by the conduit of the upper pool, which is in the highway of the fuller’s field.

And when they had called to the king, there came out to them Eliakim the son of Hilkiah, which was over the household, and Shebna the scribe, and Joah the son of Asaph the recorder.

And Rab–shakeh said unto them, Speak ye now to Hezekiah, Thus saith the great king, the king of Assyria, What confidence is this wherein thou trustest?

Thou sayest, (but they are but vain words,) I have counsel and strength for the war. Now on whom dost thou trust, that thou rebellest against me?

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.