Offerings of water and food were made to the dead so that the ghosts might be nourished and prevented from troubling the living. Even the gods required water and food; they were immortal because they had drunk ambrosia and eaten from the plant of life. When the goddess Ishtar was in the Underworld, the land of the dead, the servant of Ea exclaimed-- "Hail! lady, may the well give me of its waters, so that I may drink." The goddess of the dead commanded her servant to "sprinkle the lady Ishtar with the water of life and bid her depart". The sacred water might also be found at a confluence of rivers. Ea bade his son, Merodach, to "draw water from the mouth of two streams", and "on this water to put his pure spell". The worship of rivers and wells which prevailed in many countries was connected with the belief that the principle of life was in moisture. In India, water was vitalized by the intoxicating juice of the Soma plant, which inspired priests to utter prophecies and filled their hearts with religious fervour. Drinking customs had originally a religious significance. It was believed in India that the sap of plants was influenced by the moon, the source of vitalizing moisture and the hiding-place of the mead of the gods. The Teutonic gods also drank this mead, and poets were inspired by it. Similar beliefs obtained among various peoples. Moon and water worship were therefore closely associated; the blood of animals and the sap of plants were vitalized by the water of life and under control of the moon. The body moisture of gods and demons had vitalizing properties. When the Indian creator, Prajápati, wept at the beginning, "that (the tears) which fell into the water became the air. That which he wiped away, upwards, became the sky."[50] The ancient Egyptians believed that all men were born from the eyes of Horus except negroes, who came from other parts of his body.[51] The creative tears of Ra, the sun god, fell as shining rays upon the earth. When this god grew old saliva dripped from his mouth, and Isis mixed the vitalizing moisture with dust, and thus made the serpent which bit and paralysed the great solar deity.[52] Other Egyptian deities, including Osiris and Isis, wept creative tears. Those which fell from the eyes of the evil gods produced poisonous plants and various baneful animals. Orion, the Greek giant, sprang from the body moisture of deities. The weeping ceremonies in connection with agricultural rites were no doubt believed to be of magical potency; they encouraged the god to weep creative tears. Ea, the god of the deep, was also "lord of life" (Enti), "king of the river" (Lugal-ida), and god of creation (Nudimmud). His aid was invoked by means of magical formulae. As the "great magician of the gods" he uttered charms himself, and was the patron of all magicians. One spell runs as follows: