The heroes would then have evolved into Vaishnavite deities through a step-by-step process: 1) deification of the Vrishni heroes 2) association with the God Narayana-Vishnu 3) incorporation into the Vyuha concept of successive emanations of the God. Epigraphically, the deified status of Vāsudeva in particular is confirmed by his appearance on the coinage of Agathocles of Bactria (190-180 BCE) and by the devotional character of the Heliodorus pillar inscription (circa 110 BCE). Later, the association with Narayana (Vishnu) is suggested by the Hathibada Ghosundi Inscriptions of the 1st century BCE.