24 Half of their children spoke the language of Ashdod or the language of one of the other peoples, and did not know how to speak the language of Judah.

Read Nehemiah 13:24 Using Other Translations

And their children spake half in the speech of Ashdod, and could not speak in the Jews' language, but according to the language of each people.
And half of their children spoke the language of Ashdod, and they could not speak the language of Judah, but only the language of each people.
Furthermore, half their children spoke the language of Ashdod or of some other people and could not speak the language of Judah at all.