Now it came to pass, when they had heard the law, that they separated from Israel {a} all the mixed multitude.

(a) That is, all who had joined in unlawful marriage and also those with whom God had forbidden them to mingle with.Nehemiah 13:3 Parallel Commentaries

The Last Days of the Old Eastern World
The Median wars--The last native dynasties of Egypt--The Eastern world on the eve of the Macedonian conquest. [Drawn by Boudier, from one of the sarcophagi of Sidon, now in the Museum of St. Irene. The vignette, which is by Faucher-Gudin, represents the sitting cyno-cephalus of Nectanebo I., now in the Egyptian Museum at the Vatican.] Darius appears to have formed this project of conquest immediately after his first victories, when his initial attempts to institute satrapies had taught him not …
G. Maspero—History Of Egypt, Chaldaea, Syria, Babylonia, and Assyria, V 9

The Formation of the Old Testament Canon
[Sidenote: Israel's literature at the beginning of the fourth century before Christ] Could we have studied the scriptures of the Israelitish race about 400 B.C., we should have classified them under four great divisions: (1) The prophetic writings, represented by the combined early Judean, Ephraimite, and late prophetic or Deuteronomic narratives, and their continuation in Samuel and Kings, together with the earlier and exilic prophecies; (2) the legal, represented by the majority of the Old Testament …
Charles Foster Kent—The Origin & Permanent Value of the Old Testament

Ezra-Nehemiah
Some of the most complicated problems in Hebrew history as well as in the literary criticism of the Old Testament gather about the books of Ezra and Nehemiah. Apart from these books, all that we know of the origin and early history of Judaism is inferential. They are our only historical sources for that period; and if in them we have, as we seem to have, authentic memoirs, fragmentary though they be, written by the two men who, more than any other, gave permanent shape and direction to Judaism, then …
John Edgar McFadyen—Introduction to the Old Testament