John Gill Commentary John 4:13

"Jesus answered and said unto her, Every one that drinketh of this water shall thirst again:" — John 4:13 (ASV)

Jesus answered and said unto her
In a mild and gentle manner, patiently bearing all her scoffs and flouts, and continuing to instruct and inform her, concerning this living water, showing the preferableness of it to all others:

whosoever drinketh of this water ;
meaning in that well called Jacob's well, or any other common water:

shall thirst again ;
as this woman had often done, and would again, as she herself knew, (John 4:15) , and as Jesus did, who very likely afterwards drank of it, (John 19:28) . For though water allays heat, quenches thirst, and refreshes and revives the spirits for a while, yet in process of time, natural heat increases, and thirst returns, and there is a necessity of drinking water again.