The Ainu believe that gods or their incarnations are found in every phenomenon and object, including natural phenomena from the sun, moon, thunder, wind, water and fire, to animals, plants, and implements that are related to human life. On every occasion, prayers are offered and various ceremonies observed. There is the house guardian, the god of fire, the god of windows, the god of the hearth, the god of entrances, the god of yards, the mountain god, the sea god, the lake god, the river god, the nursing god, the hunting god, animal gods of bears and owls, and the gods of pots, mortars and boats. Thus, numerous gods usually guard man and provide food, while at times disciplining him harshly. These gods, however, are not absolute beings. Man is able to argue with them when they commit errors regarding man. Gods are of help to man and therefore are appreciated by him, while man is also expected to serve gods. Gods and man exist in a relationship of mutual assistance.