In the days of Eliashib, Joiada, Johanan, and Jaddua, during the reign of Darius the Persian, the heads of the families of the Levites and priests were recorded.
We have here the names, and little more than the names, of a great many priests and Levites, that were eminent in their day among the returned Jews. Why this register should be here inserted by Nehemiah does not appear, perhaps to keep in remembrance those good men, that posterity might know to whom they were beholden, under God, for the happy revival and re-establishment of their religion among them.
Commenting on Nehemiah 12:1-26
The sons of Levi, the chief of the fathers, were written in the book of the chronicles,.... Some think this refers to Ch1 9:14, &c. until the days of Johanan the son of Eliashib; from whence Dr. Lightfoot (p) concludes, that the Chronicles were written by Ezra in the times of this Johanan. (p) Works, vol. 1. p. 146.
SUCCESSION OF THE HIGH PRIESTS. (Neh. 12:10-47) Jeshua begat Joiakim, &c.--This enumeration was of great importance, not only as establishing their individual purity of descent, but because the chronology of the Jews was henceforth to be reckoned, not as formerly by the reigns of their kings, but by the successions of their high priests.
Commenting on Nehemiah 12:10-47