How do we work the Old Testament with the New Testament? What are we to eat? Clean foods only, or whatever we want, as long as we pray over it.
So your neighbour wants to get to know you better and gives you an invitation to dinner. You try to show God you love Him and try to do things His way, eat what He says, yet for dinner your neighbour serves you pork. What would you do?
Well, to find that middle road, we would end up eating with our neighbour, with prayer, and then eat at home what God prescribes. Why would one allow a pork dinner to divide you from your neighbour?
What if you invited your neighbour and you decide to serve lamb. Your neighbour hates lamb and won’t eat it, yet they accept your invitation. They come, but they bring a dish they can enjoy and teaches you how to handle neighbours who serve something you will not enjoy.
Then again, the one who tries to please God knows and accepts that they are in the care of Jesus, can do what is against their beliefs and/or His Law in order to get closer to their neighbour. Without compromising, without conversation, without care or love, what can be accomplished? Where is the grace, the acceptance of others who are not as close to God as you are?
Which neighbour has more faith, love, grace etc.?
One can learn the ways of God and still enjoy the company of you neighbour because of the grace and mercy of God.
There is a middle road. God knows the situation we are in, and that is why we have a mediator!!
A small side note: the term Jew came from the fact that the northern tribes of Israel were scattered and lost their identity when they sinned against God for the last time. There were only two tribes left, and one of those was almost eradicated. The clean food laws of the ‘jews’ as you say, were proscribed to the Whole house of Israel, and not one tribe. And God tends towards the ideas of one law for the stranger, and the native.
Would you let any dinner separate you from your neighbours or loved ones?