Jamieson, Fausset and Brown on Ezekiel 30:17

17. Aven--meaning "vanity" or "iniquity": applied, by a slight change of the Hebrew name, to On or Heliopolis, in allusion to its idolatry. Here stood the temple of the sun, whence it was called in Hebrew, Beth-shemesh (Jr 43:13). The Egyptian hieroglyphics call it, Re Athom, the sun, the father of the gods, being impersonate in Athom or Adam, the father of mankind.

Pi-beseth--that is, Bubastis, in Lower Egypt, near the Pelusiac branch of the Nile: notorious for the worship of the goddess of the same name (Coptic, Pasht), the granite stones of whose temple still attest its former magnificence.

these cities--rather, as the Septuagint, "the women," namely, of Aven and Pi-beseth, in antithesis to "the young men." So in Eze 30:18, "daughters shall go into captivity" [Maurer].