Kings IV 18:21

21 See now, art thou trusting for thyself on this broken staff of reed, upon Egypt? whosoever shall stay himself upon it, it shall even go into his hand, and pierce it: so Pharao king of Egypt to all that trust on him.

Kings IV 18:21 In-Context

19 And Rapsakes said to them, Say now to Ezekias, Thus says the king, the great king of the Assyrians, What this confidence wherein thou trustest?
20 Thou hast said, (but mere words,) counsel and strength for war. Now then in whom dost thou trust, that thou hast revolted from me?
21 See now, art thou trusting for thyself on this broken staff of reed, upon Egypt? whosoever shall stay himself upon it, it shall even go into his hand, and pierce it: so Pharao king of Egypt to all that trust on him.
22 And whereas thou hast said to me, We trust on the Lord God: not this he, whose high places and altars Ezekias has removed, and has said to Juda and Jerusalem, Ye shall worship before this altar in Jerusalem?
23 And now, I pray you, make and agreement with my lord the king of the Assyrians, and I will give thee two thousand horses, if thou shalt be able on thy part to set riders upon them.

The Brenton translation of the Septuagint is in the public domain.