'Living Water' in the Bible

In answer Jesus said, If you had knowledge of what God gives freely and who it is who says to you, Give me water, you would make your prayer to him, and he would give you living water.

The woman said to him, Sir, you have no vessel and the fountain is deep; from where will you get the living water?

He who has faith in me, out of his body, as the Writings have said, will come rivers of living water.

For the Lamb who is on the high seat will be their keeper and their guide to fountains of living water: and God will make glad their eyes for ever.