I understand perfectly but as an atheist, you do not understand what the bible has to say about this subject... Gentile Christians can eat anything, except as described in Acts15:20 .... Here are the passages that deals with the difference between Jewish obligations to the OT and gentile Christians...... Acts15:13-21
When they had finished, James spoke up. “Brothers,” he said, “listen to me. Simon has described to us how God first intervened to choose a people for his name from the Gentiles. The words of the prophets are in agreement with this, as it is written:
After this I will return and rebuild David’s fallen tent.
Its ruins I will rebuild, and I will restore it,
that the rest of mankind may seek the Lord,
even all the Gentiles who bear my name,
says the Lord, who does these things things known from long ago.
“It is my judgment, therefore, that we should not make it difficult for the Gentiles who are turning to God. Instead we should write to them, telling them to abstain from food polluted by idols, from sexual immorality, from the meat of strangled animals and from blood. For the law of Moses has been preached in every city from the earliest times and is read in the synagogues on every Sabbath.”