Jesus answered and said to her, "If you knew the gift of God, and who it is who says to you, "Give Me a drink,' you would have asked Him, and He would have given you living water."
John 4:10
Surrounding context
4:9 Then the woman of Samaria said to Him, "How is it that You, being a Jew, ask a drink from me, a Samaritan woman?" For Jews have no dealings with Samaritans.
4:10 Jesus answered and said to her, "If you knew the gift of God, and who it is who says to you, "Give Me a drink,' you would have asked Him, and He would have given you living water."
4:11 The woman said to Him, "Sir, You have nothing to draw with, and the well is deep. Where then do You get that living water?