Nehemiah 13:23, 25-27

In those days I also saw Jews who had married women from Ashdod, Ammon, and Moab.

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?”