'Living Water' in the Bible

Jesus answered her, if you knew the dispensation of God, and who it is that says to you, give me to drink; you would have asked of him, and he would have given you living water.

sir, said the woman, you have nothing to draw with, and the well is deep: whence then can you get that living water?

he that believeth on me, as the scripture hath said, out of his heart shall flow rivers of living water.

and he said to me, "it is done. I am Alpha and Omega, the beginning and the end: to him that is a-thirst I will freely give of the fountain of living water.

Then he shewed me a pure river of living water, clear as crystal, proceeding out of the throne of God, and of the lamb.