the Lord Jesus - as “having the mind of Christ” (1Co 2:16).
that there is nothing unclean of itself - Hence it is that he calls those “the strong” who believed in the abolition of all ritual distinctions under the Gospel. (See Act 10:15).
but - “save that”
to him that esteemeth anything to be unclean, to him it is unclean - “and therefore, though you can eat of it with out sin, he cannot.”