New Defender's Study Bible Notes
12:1 Jeshua. Twenty-two “chief of the priests” that went to Jerusalem with Zerubbabel and Jeshua are listed in Nehemiah 12:1-7, whereas only four groups of priests are listed in Ezra 2:36-39. Evidently the four original families of priests were divided into twenty-two groups after arrival in Jerusalem.
12:1 Ezra. The Ezra mentioned in this verse (also Nehemiah 12:13,33) was not the Ezra who wrote the book of Ezra. That Ezra, however—Ezra the scribe—is again mentioned in Nehemiah 12:26,36.