One of my pet peeves is how much people throw around the term heresy in Orthodox Judaism. Why does this bother me? Because they have no idea what they’re talking about.
Fortunately for you, I was obsessed with the question of “what is Jewish heresy?” for some time, so I have done a lot of reading (for a layman) on the matter. Furthermore, I have been called a heretic, a kofer, and an apikores, you name it! So if you’re looking for someone with some personal experience in the area- you got the right guy.
Heresy, as it is generally understood in Judaism, is an idea or belief that deviates from dogma, or authoritative beliefs that must be held. To disagree with dogma means a person has broken with Judaism. There are a lot of arguments over why you cannot deviate from certain beliefs, but at any rate, that is the bottom line.
So, for instance, it is usually considered OK to have diverging opinions over whether or not the Red Sea split into two or 12, since this is not a question of dogma. However, whether or not the Torah is from heaven is the kind of argument that can legitimately lead to someone being called a heretic.
If we can prove that Judaism has a set of beliefs that qualify as “dogma”, than any beliefs or ideas that deviate from them are heresy. If we cannot prove it, we will have less success.
The most famous proposed set of Jewish dogmatic beliefs is the 13 principles of Maimonides, which includes things like proper beliefs about God, that Torah is from heaven, and that God will eventually resurrect the dead. Presumably, according to Maimonides, if you deviate from these beliefs you are a heretici.
Now you may say that the 13 principles are our dogma, and they are certainly the most popular candidate that I know of. But a lot of people will disagree with you, and Marc B. Shapiro wrote a book that is simply a list of accepted Orthodox scholars who disagree with the 13 principles. It’s not such a short book either.
Examples of principles that are disputed:
3)That God has no body:
I don’t know anyone myself who believes that God has a body, but Raavad, the most accepted rabbinic authority in France in his own lifetime, did. He writes in his critique of Hilkhot Teshuva 3:7 that people “greater than he (ie:Rambam)” believed God has a body. Ok, so maybe this one isn’t dogma.
6)Moses’s prophecy is the most superior:
Not so says the Ari and the Alter rebbe of Chabad, R. Shneur Zalman. Kabbalists have a better understanding (likutei amarim, ‘igeret hakodesh’, no. 19).
Also, Rav Yosef Albo and R. Tzvi Hirshy Chajes both hold the Messiah will have greater prophecy than Moses did.
7) Every verse of the Torah was given to Moses at Sinai.
Modern Orthodox readers should also be made aware that Rav Soloveitchik’s view (as reported in Nefesh harav) that Yehoshua wrote the last 8 verses of the Torah contradicts this principle. Of course, this opinion appears in the Talmud 3 times, and once in Sifrei.
According to Rambam, it is a mitzvah to hate and destroy anyone who disagrees with his principles. If you will read Shapiro’s book, you will see this list contains many of the Sages, so I would would recommend that you wait to act on this instruction until you have read the book thoroughly. It is called ‘The Limits of Orthodox Theology’, and it is published by the Littman Library on a print by demand basis.
I should add that according to most interpreters, Rambam would see the idea of Sefirot as encroaching on the unity of God, which is of course against his 13 principles. Again we see that kabbala is in hot water with him.
On the flip side, there are those who hold it is heresy to not accept the kabbala, but obviously Maimonides opposes this idea, as is made eminently clear in Kellner’s ‘Maimonides’ Confrontation with Mysticism.’ I can’t imagine a person reading this book and coming away with another idea.
So kabbala might be a moot point, despite the almost daily attempt to claim it is dogma.
I highly recommend every book I have listed here, and I encourage everyone to stop calling each other heretics until they at least peruse a few of them. Also recommended is Doniel Hartman’s ‘The boundaries of Judaism’ and Kellner’s ‘Must a Jew Believe Anything?’.
Kellner’s fantastic book ‘Dogma in Medieval Jewish Thought’ goes through several attempts at Jewish dogma in the two centuries following Rambam, and you can see there that at the very least, Judaism lacks an agreed upon set of beliefs, and even lacks an agreed upon definition of dogma!
In all this uncertainty, it appears that the norm has become to simply accept anyone who keeps the mitzvot as part of the team, an opinion Maimonides seems to vociferously oppose. At any rate, rationalists continue to daven with kabbalists, and in my experience, very few fights break out.
iI say presumably because Menachem Kellner holds this really only applies to the first 5 principles. He discusses this in his Dogma in Medieval Jewish Thought, mentions this in ‘Maimonides’ Confrontation with Mysticism’, and I believe he goes over this as well in his “Must a Jew Believe Anything?’. All are published by the Littman Library.