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.
Tir (god) temple was located near Artashat. The 4th month of the ancient Armenian Calendar was named after Tir; "Tre" or "Tri". Also named after him was the mountain Tirinkatar, the city Tirakatar, the villages Tre and Tirarich, and some Armenian names such as Tiran, Tirots, Tiridates. In the Hellenistic period Armenians considered Tir as the Greek gods Apollo and Hermes. Tir's role as a psychopomp may have been absorbed from the Luwian thunder god "Tarhunda", whose name had been used to translate that of the Mesopotamian underworld god Nergal. Tir (god) Tir or Tiur () was the god of written language,