I just found out I wrote something similar in another thread a while back. Sorry if it gets kinda repetitive, but here it is:
Actually, there’s no need to refer to the (obligatory)
ḥagigah of Nisan 15 here, since there was another (voluntary)
ḥagigah for Nisan 14, which one may bring along with the paschal sacrifice. However, since there was no requirement in the Torah that the
ḥagigah sacrificed on the 14th be eaten at the Seder, its slaughter does not override the Sabbath or the prohibition of making an offering or eating it in a state of defilement. (Unlike the paschal offering, which even one who is ritually unclean may eat.) Therefore the voluntary
ḥagigah was not brought when Nisan 14 falls on a Sabbath or by people who are defiled. For all we know, the priests could be concerned with the paschal offering of the afternoon of 14 Nisan, not necessarily the one in 15 Nisan.
Again, I may be just biased towards John here (I know, right?
), but IMHO I think John’s scenario of Jesus being crucified before the Passover may be
the historical detail. Is it not possible that Mark and the other synoptics have ‘passoverized’ the historical Last Supper, because in Christian theology and liturgy the Eucharist - the body and blood of Jesus, the sacrificed lamb of God - has become
the new Passover meal. I already pointed out how Mark may have ‘liturgicalized’ (is that even a word?) the passion of Jesus by assigning events to the liturgical hours. Who knows, maybe the same thing happened here?
Maybe this ‘passoverization’ was not entirely caused by the gospel writers or the early Christians; it could have been a process that started with Jesus Himself. He might indeed have patterned the Eucharist after the Seder, even if the actual Last Supper was
not (historically) a Seder (although of course it was still
a meal eaten during Passover season - which could have contributed to the Eucharist being passoverized).
After all, in the synoptics you have the chief priests hesitating to arrest Jesus during the Passover festival “lest there be a riot among the people” - but they go ahead and arrest Him on Passover night anyway. In addition, you might consider other factors like Jesus apparently only being with the Twelve, whereas the Passover Seder was a family gathering (then again, one might imagine that Jesus now considered the disciples His family), not to mention that the bread is referred to as
artos and not as
azyma (yeah, I know, this sounds like the old argument the Eastern Orthodox used against the Latin and Armenian use of unleavened bread for the Eucharist, but still) - but that being said you
do have evidence from the Greek OT to support the synoptics’ use of
artos.
Plus, the supposed parallels between the Last Supper and the Passover meal are actually debatable in nature: many of these are IMHO rather incidental. The fact is, we really don’t know much about the Seder as 1st century Jews would have celebrated it other than the bare essentials (there was obviously the lamb, unleavened
matzo, wine, bitter herbs, a recounting of the Exodus, singing - but beyond that, not much else). The modern Jewish Seder is actually the product of
later development. Many of the stuff we now associate with the Seder like the afikoman or the singing of the
Mah Nishtanah or the four cups of wine actually originate later than the time of Jesus. So to draw parallels between the
modern Seder and the 1st century Last Supper (something that some Christians often attempt to do) is just anachronistic.