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.
Apollo an earlier /kʷalyán-/ before palatalization, syncope, and the pre-Lydian sound change *y ">" d. Note the labiovelar in place of the labial /p/ found in pre-Doric "Ἀπέλjων" and Hittite "Apaliunas". A Luwian etymology suggested for "Apaliunas" makes Apollo "The One of Entrapment", perhaps in the sense of "Hunter". Apollo's chief epithet was Phoebus ( ; , "Phoibos" ), literally "bright". It was very commonly used by both the Greeks and Romans for Apollo's role as the god of light. Like other Greek deities, he had a number of others applied to him, reflecting the variety of roles, duties, and aspects