Jesus answered 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."
As water quenches the thirst, refreshes and invigorates the body, purifies things defiled, and renders the earth fruitful, so it is an apt emblem of the gift of the Holy Ghost, which so satisfies the souls that receive it that they thirst no more for earthly good: it purifies also from all spiritual defilement, on which account it is emphatically styled the Holy Spirit; and it makes those who receive it fruitful in every good word and work.