I just have a little caveat.
One should keep in mind that Jewish ceremonies as they are celebrated now does not necessarily reflect
exactly how they were celebrated 2,000 years ago. 2,000 years is a lot of time to evolve and develop. I’ll use the Seder as an example. Our earliest detailed description of the Passover meal is from the tenth chapter of the tractate
Pesachim of the Mishnah, finally redacted by Rabbi Judah the Prince at the beginning of the 3rd century AD - that would be some 150 years after the destruction of the Temple. As the
JPS commentary on the Haggadah (pp. 6-7) says:
Scholars are divided on the value of this description for understanding how the meal was conducted during the Second Temple period. Many agree that some of it does represent practice during the Second Temple, but there is disagreement about the details.
Any attempt to present the Mishnah as a source for Second Temple practice must take into consideration the fact that there are details in the Mishnah’s portrayal of the seder that were introduced after the destruction of the Temple.
That’s why one should take popular Christian stuff which purport to show ‘Passover as Jesus celebrated it’ because to be honest, strictly speaking, we don’t know
exactly how Passover meals (Seders) were held in Jesus’ time aside from the bare essentials. We do know the basic structure and the basic elements of a Passover meal, but it’s hard to reenact in detail what Jews back then would have specifically done. It’s not like they had Haggadahs handy like today. Of course, there’s unleavened bread, lamb, bitter herbs and wine; there’s stuff like the remembrance of the Exodus and the singing of hymns.
But it’s likely that there wasn’t a set formula, since it was a ‘home liturgy’ that cannot be tightly controlled or regulated. Every community or every family would have had their own specific set of customs - which they inherited from their fathers, and their fathers’ fathers; in other words, their own ‘traditions’ - within that general framework. “This is the way my dad and my granddad celebrated Passover;” “this is how we celebrate Passover back in our village.”
Most - I’d even say all - of these reconstructions are based on the Mishnah, which as mentioned above isn’t really a text which should be read uncritically. While some of the stuff in the Mishnah do seem to date from an earlier time (burial customs being one of these - and we only know that the Mishnah is reliable at this point because contemporary tombs excavated in the Holy Land so far conform to the general rules the Mishnah lays), in other places it seems that the descriptions often actually reflect more ‘how we (the Rabbis) would have wanted things done’ than ‘how things were done’. In short, much of it may reflect more an ideal fantasy rather than historical reality.
Trying to use Jewish ceremonies as they are held now for what Jews 2,000 years ago did would be kind of like saying that Mass as said in churches today is
exactly the same as it was performed during the lifetime of the apostles. In other words, it’s kind of like assuming that the apostles celebrated Mass while wearing tailored chasubles and using golden chalices while the congregation sat on pews. Okay, I’m exaggerating here, but you get the point.
