||When God your Lord places them at your disposal and you defeat them, you must utterly destroy them, not making any treaty with them or giving them any consideration.
Unetanam Adonay Eloheycha lefaneycha vehikitam hacharem tacharim otam lo-tichrot lahem brit velo techonem.
||Do not intermarry with them. Do not give your daughters to their sons, and do not take their daughters for your sons.
Velo titchaten bam bitcha lo-titen livno uvito lo-tikach livnecha.
(Avodah Zarah 20a; Rashi). Or, 'mercy' (Septuagint).
This prohibition includes all gentiles (Avodah Zarah 36b; Yad, Issurey Biyah 12:1). The above mentioned seven nations, however, are forbidden even if they convert to Judaism (Yevamoth 76a).