Here is Jesus' explaination on clean/unclean food, guarding the
heart is more important than guarding the stomach.
Matt 15:10-20
Jesus called the crowd to him and said, "Listen and understand.
What goes into a man's mouth does not make him 'unclean,' but what
comes out of his mouth, that is what makes him 'unclean.' "
Then the disciples came to him and asked, "Do you know that the
Pharisees were offended when they heard this?"
He replied, "Every plant that my heavenly Father has not planted
will be pulled up by the roots. Leave them; they are blind
guides.If a blind man leads a blind man, both will fall into a
pit."
Peter said, "Explain the parable to us."
"Are you still so dull?" Jesus asked them. "Don't you see that
whatever enters the mouth goes into the stomach and then out of the
body? But the things that come out of the mouth come from the
heart, and these make a man 'unclean.' For out of the heart come
evil thoughts, murder, adultery, sexual immorality, theft, false
testimony, slander. These are what make a man 'unclean'; but eating
with unwashed hands does not make him 'unclean.' "
just so, on the principles of eating these 'unclean' food, paul
make it clear that the food itself is not 'unclean', but the
governing principle of loving each other.
Roman 14:14-18
As one who is in the Lord Jesus, I am fully convinced that no food
is unclean in itself. But if anyone regards something as unclean,
then for him it is unclean. If your brother is distressed because
of what you eat, you are no longer acting in love. Do not by your
eating destroy your brother for whom Christ died. Do not allow what
you consider good to be spoken of as evil. For the kingdom of God
is not a matter of eating and drinking, but of righteousness, peace
and joy in the Holy Spirit, because anyone who serves Christ in
this way is pleasing to God and approved by men.
so its seems like its not the food that we eat, but the attitude
that counts most.
after all, after giving thanks for the food we eat, we santified
them, meaning they should be safe. 