'Water of Life' in the Bible

Jesus answered and said unto her, "If thou knowest the gift of God, and who it is, that sayeth to thee, 'Give me drink': thou wouldest have asked of him, and he would have given thee water of life."

The woman said unto him, "Sir, thou hast no thing to draw it withal, and the well is deep: from whence then hast thou that water of life?

He that believeth on me, as sayeth the scripture, 'Out of his belly shall flow rivers of water of life.'"