Twins in mythology upon. However, other cultures attribute the outcome of twins to superior virility of the father. In various mythologies, twins often represent the dualistic nature of the universe. In Greek mythology, twins Apollo and Artemis, are the sun god and moon goddess, respectively. Similar forms of higher beings are reflected throughout different mythologies, as twin brothers Kuat and Iae represent the sun and moon in the Xingu mythology of Brazil. Egyptian God, Geb, and his twin sister, Nut, represented the binary nature of the world, with Geb being the God of the Earth, and Nut being the Goddess of the sky.
Greek mythology Nereids (who inhabited the sea), river gods, Satyrs, and others. In addition, there were the dark powers of the underworld, such as the Erinyes (or Furies), said to pursue those guilty of crimes against blood-relatives. In order to honor the Ancient Greek pantheon, poets composed the Homeric Hymns (a group of thirty-three songs). Gregory Nagy regards "the larger Homeric Hymns as simple preludes (compared with "Theogony"), each of which invokes one god". The gods of Greek mythology are described as having essentially corporeal but ideal bodies. According to Walter Burkert, the defining characteristic of Greek anthropomorphism is that "the Greek