then you shall inquire, search out, and ask diligently. And if it is indeed true and certain that such an abomination was committed among you,
Deuteronomy 13:14
Surrounding context
13:13 "Corrupt men have gone out from among you and enticed the inhabitants of their city, saying, "Let us go and serve other gods"'--which you have not known--
13:14 then you shall inquire, search out, and ask diligently. And if it is indeed true and certain that such an abomination was committed among you,
13:15 you shall surely strike the inhabitants of that city with the edge of the sword, utterly destroying it, all that is in it and its livestock--with the edge of the sword.