“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.”
Bible verses related to Nehemiah 13:24 (similar cross-references)
Zephaniah 3:9 - For then will I turn to the people a pure language, that they may all call upon the name of the LORD, to serve him with one consent. (Verses like Zephaniah 3:9)