John Wesley on John 4:10

If thou hadst known the gift - The living water; and who it is - He who alone is able to give it: thou wouldst have asked of him - On those words the stress lies. Water - In like manner he draws the allegory from bread, John 6:27, and from light, 8:12; the first, the most simple, necessary, common, and salutary things in nature. Living water - The Spirit and its fruits. But she might the more easily mistake his meaning, because living water was a common phrase among the Jews for spring water.