Many times, this verse is taken to be a prohibition against Christians marrying non-Christians. Marriage would definitely apply here, but there is nothing in the context to limit it to marriage.
Mara nyingi, mstari huu huchukuliwa kuwa katazo kwa Wakristo dhidi ya kuoa wasio Wakristo. Ndoa pasi itakuwa dhahiri hapa, lakini kuna kitu katika mazingira ambapo hukiweka kuwa cha ndoa.