but whosoever drinketh of the water that I shall give him, shall never thirst: for the water that I shall give him, shall be in him a fountain springing up to everlasting life.

does a fountain throw up salt water and fresh, by the same conveyance?

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.