'Water of Life' in the Bible

He also said to me, "It is done! I am the Alpha and the Omega, the beginning and the end. To the one who is thirsty I will give water free of charge from the spring of the water of life.

Then the angel showed me the river of the water of life -- water as clear as crystal -- pouring out from the throne of God and of the Lamb,

And the Spirit and the bride say, "Come!" And let the one who hears say: "Come!" And let the one who is thirsty come; let the one who wants it take the water of life free of charge.