John Gill Commentary Ezra 6:13

"Then Tattenai, the governor beyond the River, Shethar-bozenai, and their companions, because that Darius the king had sent, did accordingly with all diligence." — Ezra 6:13 (ASV)

Then Tatnai, governor on this side the river, Shetharboznai,
and their companions
Having received and read the above letter:

according to that which Darius the king had sent, so they did speedily ;
acquainted the Jews with what the king had written; were so far from hindering the work going forward, that they encouraged it; and made disbursements to them out of the king's tribute, and furnished them with everything necessary for sacrifice: and this they did immediately, without delay.