All things are clean to the clean: but to them that are defiled, and to unbelievers, nothing is clean: but both their mind and their conscience are defiled.
Be not led away with various and strange doctrines. For it is best that the heart be established with grace, not with meats; which have not profited those that walk in them.
And he said to them: You know how abominable it is for a man that is a Jew, to keep company or to come unto one of another nation: but God hath shewed to me, to call no man common or unclean.