Believe this, do this, doesn't exist within Judaism? So Jews who have a difference of opinion, which Judaism is very open to hard discussions and people questioning things, means we don't have a common belief? Yet, Christianity had to define itself with a creed to separate others. So one is group is saying if you don't agree with this, then you are not a "Christian". Sounds like exactly what you are saying about Judaism. Judaism, as you know, existed long before Christianity. It's followed the same Torah for centuries. The Torah is the way to God, not in the essence of do this and receive salvation, but the Torah is the way to transcend oneself to God. Yes, there is the physical doing of the commandments, but there is something much greater to them. Judaism doesn't need to create a nice neat little belief statement. From Mt. Sinai, the Jews know what to believe and do, at least conceptually. In your mind, Judaism is about Jesus wasn't the messiah. I think that is b/c that is your focus, your perspective, that's all you can see. Within Judaism, it is far different.
Regarding allowing back ethnic Jews who have gone to Christianity, it is all politics and fear. Thousands upon thousands of deaths have occurred in the name of Jesus and hatred. Horrendous treatment has occurred for many, many generations. Those that you highlight are only high profile cases. Judaism accepts converts and returning Jews all the time. I am one of them. You and I both know there is politics within the church as well. So let's stop pretending that all the accusations that you hurl towards Judaism doesn't exist within the church. Protestants, Catholicism, Orthodoxy, Latter Day Saints, Jehovah Witnesses, etc, these all exist because of ego's, politics, beliefs, etc. There are different segments even within Luthern, Methodist, etc. Many Baptist churches have stop using the word Baptist in their name, stopped the hard line on some things, so to appeal to more people.
So when Christians were killing Jews, forcing conversions, expulsion of Jews from lands, slavery, etc all in the name of Jesus, does this all fit within the creed?
I don't believe one minute that the Christian community, as a whole today, believes any of that was acceptable. Yet, at the time, they did. Why? Politics, fear, superiority, a mix. Kind of what you are purporting today, an air of superiority b/c Christianity has a creed.