Ezra 9:10-12

And now, O our God, what shall we say after this? For we have forsaken Your commandments, which You commanded by Your servants the prophets, saying, ‘The land which you are entering to possess is an unclean land, with the uncleanness of the peoples of the lands, with their abominations which have filled it from one end to another with their impurity. 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.’