Esther 1:20-22

So when the king's decree is made and proclaimed throughout all his kingdom, extensive as it is, all wives will give honor to their husbands, high and low. This advice pleased the king and the princes, and the king did what Memucan proposed. He sent letters to all the royal provinces, to each in its own script and to every people in their own language, saying that every man should rule in his own house and speak there in the language of his own people. [If he had foreign wives, let them learn his language.]