While in the vision quest, High Priestess speaks of our Divine Feminine Self that will be able to get Creator of all. This can be why in tarot, the cups are feminine in nature, Creator if generally symbolised as drinking water, and cups are able to keep this drinking water. https://linkdirectory724.com/listings12681821/the-fact-about-9-of-swords-tarot-card-meaning-that-no-one-is-suggesting