They said to the woman, "Now we believe, not because of your speaking; for we have heard for ourselves, and know that this is indeed the Christ, the Savior of the world."

 She goes on to speak of "our father Jacob." The Jews would, of course, have strenuously denied that Jacob was the father of the Samaritans, but it was part of the Samaritan claim that they were descended from Joseph, the son of Jacob, by way of Ephraim and Manasseh. The woman is in effect saying to Jesus: "This is blasphemous talk. Jacob, our great ancestor, when he came here, had to dig this well to gain water for his family and his cattle. Are you claiming to be able to get fresh, running stream water? If you are, you are claiming to be wiser and more powerful than Jacob. That is a claim that no one has any right to make." 