This is again the second sign that Jesus did, having come out of Judea into Galilee.

 Sometimes the Rabbis identified this living water with the wisdom of the Law; sometimes they identified it with nothing less than the Holy Spirit of God. All Jewish pictorial religious language was full of this idea of the thirst of the soul which could be quenched only with the living water which was the gift of God. But the woman chose to understand this with an almost crude literalism. She was blind because she would not see. 