“And who knoweth whether he shall be a wise man or a fool? yet shall he have rule over all my labour wherein I have laboured, and wherein I have shewed myself wise under the sun. This is also vanity.”
King James Version (KJV)
2:19 Or a fool - Who will undo all that I have done, and turn the effects of my wisdom into instruments of his folly. Some think he had such an opinion of Rehoboam.