The Bible.
It is the water of life; the more you lave (pour) it forth, the fresher it runs.
It is the fire of God’s glory; the more you blow it the clearer it burns.
It is the corn of the Lord’s field; the better you grind it, the more it yields.
It is the bread of heaven; the more it is broken and given out, the more remains.
It is the sword of the Spirit; the more it is scoured, the brighter it shines.