It's an interesting position for sure. Being Jewish, in the true sense of the faith, would require belief in their god. An agnostic claims no faith nor disbelief in a god, so it's kind of contradictory, but not totally. Now, if he claimed to be an atheist Jew then that could be called out for sure.
Being Jewish (or any faith for that matter) is mostly about a belief in a deity, but there are other traditions and customs that define the religion as well. Jews have some pretty interesting customs that I'm assuming he partakes in.
My business partners are Jewish, so I've learned quite a bit about their faith. I really do hate the days where I'm the only one in the office though!
LOL
"I don't know much but I think maybe some blacks didn't vote for Bernie because he is Jewish. I also think that a person has to believe in a god to be Jewish."
You certainly don't know much. Or thought about this very much. But you do get long winded when saying what you don't know.
Along with tax policy (
@Padawanbater2 ), this is complicated.
Here is what some people who have thought about it say:
https://www.momentmag.com/can-there-be-judaism-without-belief-in-god/
A pithy (but to me obnoxious quote) from the article:
The contradictions might seem glaring, but centuries of Jewish history since the Haskalah, the Jewish Enlightenment, have proved that Jews are too strong for narrowly defined contradictions. One of the most important responsibilities a person has is to carefully and conscientiously examine her beliefs. She has a moral responsibility to not simply inherit her beliefs, accepting them as she does her name, to not assert propositions about the world just because of the group that she was born into. If an open-minded look at the world makes her conclude that this is a godless universe, does she have to renounce the culture she grew up with, that has done so much to develop a moral outlook and human values? The answer, for me and many others, is no.
I'm atheist but observe and participate in judeo-christian culture and values. I find it quite logical to do so. Mainly because that's the culture I live in and I understand that a society where, for example, murder is common and accepted would necessarily be a small one. It couldn't compete with a culture that is resolved to cooperate rather than eliminate those who disagree. Same goes with religion-based human sacrifice. I see religion as a means to communicate acceptable behavior and enabled societies to evolve in a darwinian sense. Judeo-Christian values have created societies that are more effective at competing and growing than many others from the past, such as the religions prevalent at the time of Jesus's birth. I also think that other religions such as Buddhism, Islam, and a handful of others are behind the growth and prosperity of it's people.
To reject the existence of a god doesn't mean I reject the culture and values based upon Christianity. I wish more Christians observed more of their own values. They have this tendency to pick and choose which parts of Christianity to follow. Beginning with the modern Christian who also opposes helping refugees from a war we helped start.
Lieberman said he doesn't think Judaism would continue if Jews no longer believed in a god. I'm not so certain of this but it would create a paradox that less thoughtful people might become fixated upon.