The princes report that the people 'have not separated themselves from the peoples of the lands, doing according to their abominations' (9:1), naming Canaanites, Hittites, and the rest of the old list, and the assembly resolves 'to put away all the wives, and such as are born of them' (10:3). The covenant ground is stated in the law the report echoes: Israel was not to intermarry with those nations because 'he will turn away thy son from following me, that they may serve other gods' (Deuteronomy 7:3-4). The danger was worship, not ancestry, and the same book seats at the passover 'all such as had separated themselves unto them from the filthiness of the nations of the land, to seek Jehovah' (6:21), which is a door held open to outsiders who came in. The severity is real and the text does not soften it: households were broken, and chapter 10 ends with a list of names and the flat sentence 'All these had taken foreign wives; and some of them had wives by whom they had children' (10:44). Readers have long weighed the account differently, and the readings are given below. This page draws no verdict on it, and nothing in these chapters is a text about Jewish people to be used against them; it is a record of one community's crisis, kept in that community's own Scripture.
A necessary covenant measure for that moment
held by Derek Kidner (Ezra and Nehemiah, Tyndale Old Testament Commentaries, 1979) and the traditional reading, which holds that a remnant of a few thousand around one altar would have dissolved into the surrounding cults within a generation, and that Nehemiah faced the same drift and named the same danger (Nehemiah 13:23-25)
The text reports the measure without the narrative endorsing every part of it
held by H. G. M. Williamson (Ezra, Nehemiah, Word Biblical Commentary, 1985) and Joseph Blenkinsopp (Ezra-Nehemiah, Old Testament Library, 1988), who both observe that the proposal comes from Shecaniah and the assembly rather than from a recorded command of God, and that Malachi, preaching in the same period, says 'For I hate putting away, saith Jehovah' (Malachi 2:16)