The use of the first person identifies the author as Nehemiah, the governor of the Persian province of Judah (1:1-2:20; 13:4-31). His name means "Yahweh has comforted."
The mention of Darius the Persian in 12:22 probably refers to Darius II, the successor of Artaxerxes I (Longimanus).1Darius ruled from 423-404 B.C. The text refers to an event that took place in Darius' reign (12:22). Therefore Nehemiah must have written the book sometime after that reign began. Since there are no references to Nehemiah's age in the text, it is hard to estimate how long he may have lived. When the book opens, he was second in command under King Artaxerxes (cf. Daniel). If he was 40 years old then and 41 when he reached Jerusalem in 444 B.C., he would have been 62 years old in 423 B.C. when Darius replaced Artaxerxes. Consequently he probably wrote the book not long after 423 B.C., most likely before 400 B.C.2
