Bede

Now therefore, Thathannai, governor of the region, etc. Thus the sequence of the text is such, as if Darius himself had read the letters of Cyrus, and immediately confirmed them with his own authority upon reading them, thereby restraining all their adversaries, and ordering the temple of God to be built in its place, as it was read to them, and assisting its worshippers in all things with the most devoted mind to serve according to his will. …

Commentary on Ezra and Nehemiah ↗