Ezra 5:17

The king’s treasure house. Excavations have shown that documents of religious or literary nature were preserved in temple archives or in palaces, and economic and political documents in palace libraries. Numerous large archives consisting of many thousands of cuneiform tablets have been found in the ruined sites of the ancient world. The most famous of these archives is the so-called library of Ashurbanipal, found in one of his palaces at Nineveh. Other state libraries or archives have been found in the royal palaces at Mari on the central Euphrates, in the Hittite capital city of Khattushash (Boghazköy), in the palace of Ugarit (Ras Shamrah), the palace of Ikhnaton at Amarna, and elsewhere. Whether royal treasures were kept in the same places is not yet certain, but this may easily have been the case. Hence, it was probably on the basis of good information that Tatnai proposed a search of the royal treasury for the decree of Cyrus, to determine whether the claim of the Jews was true.

At Babylon. Thinking that the decree had been issued at Babylon, Tatnai suggested an investigation of the files kept there. It is probable that neither the Jews, who suggested the search, nor Tatnai himself knew that the decree actually had been made at Ecbatana, the former capital of Media. It seems strange that the Jews were not able to produce a copy of the document to establish the truth of their claims. It is possible that their enemies, in a surprise attack, had stolen and destroyed their official files. This would have left the Jews without any legal evidence by which they could prove their right to rebuild the Temple.

It should be noted in this connection that Tatnai must have gained a favorable impression of the sincerity and good faith of the Jews. He did not stop the work, but allowed them to continue to build until a thorough investigation would determine the validity of their claims and the present king had had an opportunity to render a decision.