Nehemiah 13:23-29

In those days I also saw Jews who had married women from Ashdod, Ammon, and Moab. As for their children, half spoke in the language of Ashdod, and none of them knew how to speak [Hebrew] the language of Judah, but only the language of his own people. So I contended with them and cursed them and struck some of them and pulled out their hair, and made them swear by God, saying, “You shall not give your daughters [in marriage] to their sons, nor take [any of] their daughters for your sons or for yourselves. Did not Solomon king of Israel sin [greatly against God] regarding these things? Yet among the many nations there was no king like him. He was loved by his God, and God made him king over all Israel; nevertheless the foreign women caused even him to sin [by turning to other gods and so, judged by God, he lost his kingdom]. [1 Kin 11:1-11] Do we then hear about you that you have done all this great evil, acting unfaithfully against our God by marrying foreign (pagan) women?” One of the sons of Joiada, the son of Eliashib the high priest, was a son-in-law of Sanballat the Horonite, so I chased him away from me. O my God, remember them, because they have defiled the priesthood and the covenant of the priesthood and the Levites.