In Deuteronomy 29:33, this signifies the vastation of good and truth, for these destroy the earth and its produce as lusts destroy goods and falsities destroy truths. (Arcana Coelestia 1666)

5668. 'And gave them water' means a general influx of truth from the internal. This is clear from the meaning of 'water' as truth, 2702, 3058, 3414, 4976, in this case truth in general. This is why 'giving water' means a general influx of truth; and the reason it comes from the internal is that this took place in Joseph's house, 5667. A general influx of truth is enlightenment that makes it possible for truth to be discerned and understood. This enlightenment is provided by the light of heaven which flows from the Lord, a light which is nothing else than Divine Truth, 2776, 3138, 3167, 3195, 3222, 3339, 3485, 3636, 3643, 3993, 4302, 4413, 4415, 5400.