Ezra 9:10-12

10“And now, our God, what can we say after all this? We have abandoned your commandments!

11The commandments you gave us through your servants the prophets, said, ‘The land you are going to take possession of has been polluted by its perverted people and by their disgusting practices that have filled it with wickedness from one end to another.

12So never let your daughters marry their sons or your sons marry their daughters, and never seek peace or trade with them. Then you will be strong, be able to eat the good things the land produces, and be able to give this land as a long-lasting inheritance to your children.’