Nehemiah 13:24

And their sons spoke half in the speech of Ashdod, and could not speak in the Jews' language, but according to the language of each people.

For then I will turn to the peoples of a pure language, that they may all call upon the name of LORD, to serve him with one consent.

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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.

For then I will turn to the peoples of a pure language, that they may all call upon the name of LORD, to serve him with one consent.

Neither shall thou make marriages with them. Thy daughter thou shall not give to his son, nor his daughter shall thou take to thy son.

And they took their daughters to be their wives, and gave their own daughters to their sons and served their gods.