The High Priestess (also known as the Popess, Pope Joan, Female Pontiff) is a Tarot card of the Major Arcana, numbered 2.
In the Rider-Waite-Smith Tarot deck, upon which many modern decks are based, The High Priestess wears plain blue robes and sits with her hands in her lap. She has a lunar crescent at her feet, a horned diadem centering a globe on her head and a large cross on her breast. The scroll in her hands, partly covered by her mantle, bears the word TORA. She is seated between the white and black pillars—'J' and 'B' for Jachin and Boaz—of the mystic Temple of Solomon. The veil of the Temple is behind her: it is embroidered with palm leaves and pomegranates.  Further behind all of that is what seems to be a body of water, most probably the sea.