Note in the table below Darius the Mede is not to be confused with Darius I (the Great).
On this cuneiform cylinder Cyrus recorded his capture of Babylon and his program of repatriating the conquered peoples to their homelands writing..
From [Babylon] to Aššur and (from) Susa, Agade, Ešnunna, Zamban, Me-Turnu, Der, as far as the region of Gutium, the sacred centers on the other side of the Tigris, whose sanctuaries had been abandoned for a long time, I returned the images of the gods (See Cyrus' words in Ezra 6:5 - "utensils of the temple of God"), who had resided there [in Babylon], to their places [including Jerusalem] and I let them dwell in eternal abodes.
10 'Moreover, I will take from them the voice of joy and the voice of gladness, the voice of the bridegroom and the voice of the bride, the sound of the millstones and the light of the lamp.
11 'And this whole land shall be a desolation and a horror, and these nations shall serve the king of Babylon seventy years.
In addition, inspectors known as “the eyes and ears of the king” might appear at any time to check on conditions in the provinces. But one look at the biblical text reveals that it is the critics who have committed the blunder at this point.