John Chrysostom — as excerpted in the Catena Aurea on John 4:13-18

“(Hom. xxxii. 1) To the woman’s question, Art Thou greater than our father Jacob? He does not reply, I am greater, lest He should seem to boast; but His answer implies it; Jesus answered and said to her, Whosoever drinketh of this water shall thirst again: but whosoever drinketh of the water that I shall give him shall never thirst; as if He said, If Jacob is to be honoured because he gave you this water, what wilt thou say, if I give thee far better than this? He makes the comparison however not to depreciate Jacob, but to exalt Himself. For He does not say, that this water is vile and counterfeit, but asserts a simple fact of nature, viz. that whosoever drinketh of this water shall thirst again.”