Ezra-Nehemiah in the Bible Encyclopedia - ISBE

LITERATURE 1. Name: The books of Ezra and Nehemiah, by whomsoever written, are properly so named according to analogy from the principal persons mentioned in them. In the Hebrew Bibles, the former is headed simply, Ezra, and the latter, Nehemiah. The two books are counted in the Talmud, in Josephus, and in the Canon of Melito, 171 AD, as one, and are so treated also in the subscription of the Massoretic Text, which reads: "The totality of the verses of Ezra and Nehemiah is 688, and its sign is `Remember, Yahweh, the reproach of thy servants,' and its two parts (are at the sentence) `unto the ascent of the corner' (Neh 3:31) and its chapters (sedharayw) are ten, and its sign is `Upon a high mountain get thee up, O thou that announcest good tidings to Zion.' " In the Septuagint, Ezra-Nehemiah is called Esdras B, while an apocryphal Book of Ezra is called Esdras A (see below). In the catalogues of the Old Testament writings handed down to us by the Fathers (Origen, Cyril, Melito, Jerome and the Council of Laodicea) our Ezra is called 1 Ezra; Nehemiah, 2 Ezra; the apocryphal Greek Ezra, 3 Ezra; and an apocalyptic book, falsely called a book of Ezra, is denominated 4 Ezra. 2. Object: The object of the books is to show that God fulfilled His promise, or prophecy, to restore His exiled people to their inheritance, through the instrumentality on the one hand of the great heathen monarchs, Cyrus, Darius and Artaxerxes, and on the other hand by stirring up the spirit of such great men among the chosen people as Joshua and Zerubbabel, Haggai and Zechariah, and Ezra and Nehemiah, through whom the altar, the temple, the houses and walls of Jerusalem, and finally the worship and ceremony of the Jewish people were reestablished, the people being separated from foreign admixtures, customs and idolatry, and their religious observances purified and fixed for all time...

Link: https://bible-history.com/isbe/E/EZRA-NEHEMIAH/