This Hebrew name designates On, an ancient Egyptian city (Egyptian 'Iunu,' Greek 'Heliopolis,' meaning 'city of the sun'). Located near modern Cairo on the Nile's east bank, On was a major religious center for the worship of the sun god Ra. Genesis 41:45 and 41:50 identify Potiphera, Joseph's father-in-law, as 'priest of On,' and Genesis 46:20 confirms that Joseph's sons were born to Asenath, daughter of this priest. Ezekiel 30:17 prophesies judgment on 'the young men of Aven [On],' condemning the idolatry centered there. On thus represents Egyptian religion and culture into which Joseph married, a detail highlighting God's providence in exalting Joseph even within Egypt's pagan structures.