'Water of Life' in the Bible

And he said to me, They are done. I am Alpha and Omega, the beginning and the end. To him who thirsts I will give of the fountain of the water of life freely.

And he shewed me a river of the water of life, clear as crystal, proceeding out from the throne of God and the Lamb.

Both the Spirit and the bride are saying, Come. And let the one hearing say, Come. And let the one thirsting come; let the one who is willing receive the water of life freely.