Deuteronomy 7:2-4 ▼

2 And when the LORD thy God shall deliver them before thee, thou shalt smite them and utterly destroy them, thou shalt make no covenant with them, nor show mercy to them:

3 Neither shalt thou make marriages with them; thy daughter thou shalt not give to his son, nor his daughter shalt thou take to thy son.

4 For they will turn away thy son from following me, that they may serve other gods: so will the anger of the LORD be kindled against you, and destroy thee suddenly.