John 4:10

10 Jesus answered and said unto her, If thou knewest the gift of God, and who it is that saith to thee, Give me to drink; thou wouldest have asked of him, and he would have given thee living water.

John 4:10 In-Context

8 (For his disciples were gone away unto the city to buy meat.)
9 Then saith the woman of Samaria unto him, How is it that thou, being a Jew, askest drink of me, which am a woman of Samaria? for the Jews have no dealings with the Samaritans.
10 Jesus answered and said unto her,If thou knewest the gift of God, and who it is that saith to thee, Give me to drink; thou wouldest have asked of him, and he would have given thee living water.
11 The woman saith unto him, Sir, thou hast nothing to draw with, and the well is deep: from whence then hast thou that living water?
12 Art thou greater than our father Jacob, which gave us the well, and drank thereof himself, and his children, and his cattle?
The King James Version is in the public domain.