XXno-a-mon (no amon, Egyptian nut, "a city," with the feminine ending t, and Amon, proper name of a god, City Amon, i.e. the "City," paragraph excellence, of the god Amon; translated in the King James Version "populous No," following the Vulgate (Jeromes Latin Bible, 390-405 A.D.) in a misunderstanding of the word amon; the Revised Version (British and American) "No-amon"): Occurs in this form only in Nah 3:8, but amon minno, "Amon of No," occurs in Jer 46:25. Compare also Ezek 30:14-16, where no, is undoubtedly the same city.
The description of No-amon in Nah 3:8 seems to be that of a delta city, but yam, "sea" in that passage is used poetically for the Nile, as in Job 41:31 and in Isa 18:2. With this difficulty removed, the Egyptian etymology of the name leaves no doubt as to the correct identification of the place. The "City Amon" in the days of Nahum, Jeremiah and Ezekiel was Thebes (compare the article "Thebes" in any general encyclopedia).
M. G. Kyle