Deuteronomy 7:2-4

World English Bible

² and when Yahweh your God delivers them up before you, and you strike them, then you shall utterly destroy them. You shall make no covenant with them, nor show mercy to them. ³ You shall not make marriages with them. You shall not give your daughter to his son, nor shall you take his daughter for your son. ⁴ For that would turn away your sons from following me, that they may serve other gods. So Yahweh’s anger would be kindled against you, and he would destroy you quickly.