Ezra 9:12-13

Now therefore, do not give your daughters as wives for their sons, nor take their daughters to your sons; and never seek their peace or prosperity, that you may be strong and eat the good of the land, and leave it as an inheritance to your children forever.’ And after all that has come upon us for our evil deeds and for our great guilt, since You our God have punished us less than our iniquities deserve, and have given us such deliverance as this