Charles Spurgeon Commentary John 4:33-35

"The disciples therefore said one to another, Hath any man brought him [aught] to eat? Jesus saith unto them, My meat is to do the will of him that sent me, and to accomplish his work. Say not ye, There are yet four months, and [then] cometh the harvest? behold, I say unto you, Lift up your eyes, and look on the fields, that they are white already unto harvest." — John 4:33-35 (ASV)

Therefore said the disciples one to another, Hath any man brought him ought to eat? Jesus saith unto them, My meat is to do the will of him that sent me, and to finish his work. Say not ye, There are but four months, and then cometh harvest? behold, I say unto you, Lift up your eyes, and look on the fields, for they are white already to harvest.

That was probably an old Eastern proverb, used by lazy men who never thought it time to get to work; but Jesus said, "Do not use the idler's language any longer; now, at once, there is work for you to do."