v16-17 if communion is significant, wouldn't communion with idols be
significant too?
v18 if sacrifice was important in the ot, wouldn't that indicate that
sacrifice is important?
v19-20 idols are nothing (not gods), but that doesn't mean that it isn't
demonic.
paul shows the importance of matter (the material world)
in the old testament (v18) and in the new testament (v21)
our religion lends importance to the material world; it is not
to be denied completely (asceticism) nor to be used without
bounds (antinomianism) (this point is extrapolated, but is emphasized
in many nt passages...)