And he came to Jerusalem in the fifth month. From the ninth verse it appears that the first day of the first month—the opening day of the year—was selected for the commencement of the journey. This was no doubt viewed as an auspicious day for beginning an important undertaking.
The time occupied on the way was exactly four months, which is longer than might have been supposed to be necessary. Herodotus reckoned it a three months journey from Sardis to Susa (verse 53), and the younger Cyrus conducted an army from Ephesus to Cunaxa, near Babylon, in ninety- three marching days (Xen, 'Anab' 2 1, § 6)—the distance in either case being considerably more than that from Babylon to Jerusalem, even supposing the route followed to have been by Balis and Aleppo.
But a caravan, like an army, requires rests; and we hear of one such rest at Ahava (Ezra 8:15). Cyrus gave his troops more days of rest than of movement, and took half the year to reach Cunaxa from Ephesus.
We need not be surprised, therefore, that Ezra's journey occupied four months. Some delay must almost certainly have been caused by the perils of the route (see Ezra 8:31).