Before the decipherment of cuneiform text, knowledge of the history of the ancient Mesopotamia was mostly dependent upon classical authorities and the Hebrew Bible. These testimonies were scanty and confused for times predating the 7th century BCE. Had the native history of Berossus survived, this may not have been the case; all that is known of the Chaldaean historian's work, however, is derived from quotations in Josephus, Ptolemy, Eusebius, Jerome and George Syncellus.
Classical Greece
The account of Babylon given by Herodotus is not that of an eye-witness