Romeo imagines Juliet as a worshipper of Diana, the goddess of chastity and virgins, whose symbol is the moon. In his description, Diana is envious because Juliet is more beautiful than she. This has made Diana pale with grief, which explains why the moon's light is sickly and pale compared to that of the sun. Romeo calls on Juliet to rise and kill the jealous moon (which the real sun will seem to do once it rises above the horizon and the moon becomes barely visible).