Back when I once taught on this topic, one of my students asked, “Why don’t we celebrate Passover?”—meaning we Christians. And it just so happens we do. We call it Pascha, Pascua, Páques; most languages use some form of the original Hebrew word
פֶּסַח/pesákh,
“skipping or passing over.”
It’s just English-speakers use the word Easter. And obviously we do it way different than we see in the scriptures—so different, English-speaking people routinely assume Easter and Passover are two entirely different holidays.
I can’t argue with this assumption. Christians don’t bother to purge our homes of yeast or leavening. Don’t cook lamb. (Nor practice the modern Jewish custom of not having lamb, since there’s no temple in Jerusalem to ritually sacrifice a lamb in.) Don’t put out the seder plate. Don’t tell the Exodus story. Don’t have the kids ask the Four Questions (what’s with the matzot, why are bitter herbs part of the meal, why roasted meat in particular, and why does the food gets dipped twice?). Don’t hide the afikomen and have the kids search for it; we do that with the eggs though.
And some English-speaking Christians do observe Passover as a separate holiday. Some of us celebrate it Hebrew-style, as spelled out in the scriptures, as in Exodus and Deuteronomy. But more often, Christians follow the lead of our Messianic Jewish sisters and brothers, figuring they’re Jews so they know how to do it. Thing is, Messianic Jews borrow their traditions from the Conservative Judaism movement. (Which, contrary to their name, ain’t all that conservative.) Their haggadah—their order of service—is nearly always adapted from Orthodox or Conservative prayer books, which means it dates from the 10th century or later.
Some Jewish customs come from the Mishna, so they do date back to the third century, and maybe go as far back as the first. But they might not have. It’s entirely likely most of them originated after the temple was destroyed, ’cause now you can’t do the religious portion of Passover at temple, so you gotta do it somewhere, so now it’s made part of the seder, the ritual Passover dinner. Jesus and his students may have simply eaten dinner, quoted the Exodus story, thanked God for his salvation, drank, sang, and that’s about all. No haggadah; no seder plate, no afikomen, no Four Questions, no Airing of the Grievances… oh wait, that’s Festivus.
And not all these customs are part of everyone’s Passover. Just as Christians celebrate Christmas and Easter every which way, Jews then and now got to select their own customs. Hence families have unique customs, and various synagogues emphasize various things. Medieval Jewish communities in eastern Europe, north Africa, Spain, and the middle east, all came up with their individual haggadahs. So did Samaritans.
The point of the haggadah is to teach the Exodus story to those who don’t know it, usually children. And remember, Jesus’s students were teenagers, not children: Legal adults who already knew the Exodus story. If they hadn’t heard it in enough detail at home, Jesus would’ve taught it to them personally, and they’d’ve celebrated several Passovers together by the time of his last Passover supper. So, just as some families don’t tell the nativity story every Christmas once the kids get older, don’t be surprised if Jesus supper skipped the Exodus story as redundant.
Christians usually know very little about Jewish culture, and mistakenly think that’s how Jews and Pharisees behaved in Jesus’s day too. In my experience Messianic Jews think this too—and regularly make a big, big point of how Jesus would’ve behaved exactly like the Jews they know… when the gospels make it really clear Jesus didn’t behave at all like his fellow Jews, and it really annoyed them. In either case when they attend a Passover seder and listen to whatever haggadah the leader borrowed or wrote, they routinely think it’s so profound how Jesus did all these rituals (even though he likely didn’t) and how his life and teachings “fulfilled” all these rituals.
Er, no. Of course we can see similarities between Jesus’s life and teachings, and Passover rituals… and Christian rituals, and really any rituals if you wanna connect the dots hard enough. But today’s Passover customs might entirely postdate Jesus. So let’s not read too much into what Jesus “brought meaning into”—he may not have. Especially when your haggadah was put together by Christians.