Incubatio, also known as incubation, is an ancient ritualistic practice where individuals sought divine guidance or healing through dreams. The practice involved spending a night or a period of time in a sacred space, often a temple or sanctuary dedicated to a particular deity. During the incubation process, the individual would enter a state of meditation or prayer and then sleep, hoping to receive a dream or vision from the deity. Incubatio was widespread in various ancient cultures, including ancient Greece, Rome, Egypt, and Mesopotamia. The practice was often associated with healing rituals, where individuals sought cures for physical ailments or received guidance in making important decisions. In the temples of Asclepius, the ancient Greek god of healing, incubation was a prominent practice. Pilgrims would visit these healing temples and sleep in the abaton, a special chamber within the temple, with the hope of receiving dreams that would lead to healing or cure. The priests or priestesses of the temple would interpret the dreams and provide guidance or remedies based on the dream’s content. Incubatio was seen as a direct means of communication with the divine and was believed to facilitate divine intervention in the lives of individuals seeking guidance or healing. The practice of incubatio highlights the significance of dreams and their role in ancient religious practices. It also reflects the ancient belief in the power of the divine to intervene in human affairs through dreams and visions. The study of incubatio provides insights into ancient concepts of healing, spirituality, and the interaction between humans and the divine in the context of ancient religious rituals and practices.