Perhaps you might explain why this is a problem?
By that, I don’t mean why it’s a problem within the Christian paradigm, I understand why it’s a problem within the Christian paradigm, I mean why it should be a problem within the Jewish (or any other religion for that matter) paradigm.
All religions share something in common. They all provide some explanation of reality and that explanation defines the religion. All people in all times wonder about the same or similar basic questions. Where did we come from? Why do we exist, or what is our purpose? How should we treat each other (morals). What happens when we die? My mother died and I love and miss her. What happened to her soul or spirit or life force? What is the destiny of mankind?
These questions are unanswerable by the power of human intellect. We can not figure out why we exist and know the answer for certain. We can speculate and in the absence of a true answer we make guesses, maybes. Every people has some kind of creation story, a religion of some sort.
All religions propose some explanation of reality. They propose answers to the universal questions that we can not find answers to by the power of intellect. In other words they explain or define life and reality that we can see and can not see. They tell you how you came into existence, why you exist and where you are going and how to get there, in general terms.
The only reason to adhere to any religion is that you believe the precepts or doctrines it proposes. This is the glue that holds a religion together. It is the thing that unifies it and holds it in existence. In order to believe or accept the explanation of reality proposed by any religion you have to know what it is.
All religions propose some kind of moral norms. In order to follow them you must know what they are.
Since we can not figure out the answers to these big universal questions we can only know the answers if they are given to us. We all live by faith, although not religious faith. If I am ill and go to the doctor and he tells me what is wrong and what to do about getting well, and I believe him and follow his advice, I do so by faith. He gives me the recipe to get well and I believe him, not being able to figure out what to do on my own. If I am lost in a city and ask you for directions and you tell me how to get where I am going, I know how to get to my destiny by faith, by believing you. We can gain knowledge by faith. If we believe truth about spiritual destinies or how to heal broken souls we also gain this knowledge by faith, religious faith.
Christians and Jews believe God revealed certain information to mankind through divine revelation. Moses came down from the mountain with it. We did not figure this stuff out. It was revealed. We believe God created all that is. One being made heaven and earth, all that exists, including your soul and mine.
We believe that in salvation history this Being who is immortal and had no beginning or end and who cares about us intervened in history to lead us to our destiny in the stories of Noah, Abraham, Isaac and Jacob, the twelve tribes, Moses, David, the prophets, etc. We know this and other things by faith.
Logic says what we believe may be correct or true, or it may be false. But any religion whether it is true or false, has to propose some explanation of reality from which moral norms come, to which its adherents can assent. This is how they know who they are and why they are Mormons and not Presbyterians or Buddhists.
There really is no defined Jewish religion anymore. I met Israelis who are atheists, but consider themselves Jews. They are Jews not by any faith or assent to any religious principle, but by genes. Other Jews who are religious also say the atheists are Jews. This is not a religion. There is nothing religious about it. It is more tribal than anything else.
What is interesting to me about Jews is that it is ok to be an atheist and you are still a Jew. If you come to faith in Jesus you are no longer a Jew. I have a friend who attended some rite for a relative in the synagogue, maybe a bar mitzvah if I recall. He was not allowed to read from the Torah, but his atheist brother was allowed to read.
Maybe this is the common definition or belief that makes Jews Jews, that they all agree gives them some common identity. It is not what they are in religion, but what they are not. They are not Christians.