Part 2:
As I have noted I see the Lord's supper on the same day as Passover just earlier in the day and you are correct about Seder. Now this ritual of Passover was a celebration ritual that was done so that Israel would always remember how God saved them from death but we should also recognize that the agreement was made on the 14th;
Shemot 12:21-27 <snip for brevity>
Yes, I added the
italicized text.
Again, with love as a brother, the Passover is not a day, it is a sacrifice. The memorial follows the sacrifice, IOW it is after the sacrifice, that is the memorial, the night to keep watch / vigil unto YHVH, until the morning of the 15th.
BTW: 'Elohim help you if you dozed off with my family. I dozed off, and woke up with make-up, painted finger nails and snazzy new hair do.
The "Last / Lord's Supper" and Passover are not the same. The "Last / Lord's Supper" is separate and different from Passover / Unleavened.
Of all such type offerings, this is the only one that I recall that is to specifically be baked with "leaven". All others are specifically to be without "leaven". Though memory is nagging that there may be another, however it also would not be offered upon the altar.
VaYiqra 23:17 Ye shall bring out of your habitations two wave-loaves of two tenth parts of an ephah: they shall be of fine flour, they shall be baken with leaven, for first-fruits unto YHVH.
I can not offer any real explanation. However, let us remember:
Shemot 34:22a And thou shalt observe the feast of weeks, even of the
first-fruits of wheat harvest ...
John 12:23 And Jesus answereth them, saying, The hour is come, that the Son of man should be glorified. 24 Verily, verily, I say unto you, Except a grain of wheat fall into the earth and die, it abideth by itself alone; but if it die, it beareth much fruit.
Food for thought.
To sum up, IMO once we begin to examine the specifics with a critical eye, this begins to become clear.
Again, I also once saw it as you do.
See the agreement between Israel and God was made on the 14th and sealed on the 14th when the lambs were slayed and the blood put on the posts then God honored the agreement during the beginning of the 15th.
Shemot 12:14 And this day shall be unto you for a memorial, and ye shall keep it a feast
to YHVH: throughout your generations ye shall keep it a feast by an ordinance for ever.
Shemot 12:17 And ye shall observe the feast of unleavened bread; for in this
selfsame
day have I brought your hosts out of the land of Egypt: therefore shall ye observe
this
day throughout your generations by an ordinance for ever.
Shemot 12:42 Because YHVH kept *vigil*
that night to bring them out of Egypt, on this
night all the Israelites are to keep *vigil* to honor YHVH for the generations to come.
I know ... repetitious.
What specifically did the blood do? Or perhaps I should ask, what purpose did the blood serve? At what time(frame) did the blood come into play?
Christ made the new agreement on the 14th and then sealed the agreement on the 14th in exactly the same manner as Moses had done during the first agreement. The agreement and sacrifice to seal it is made on the 14th and the Children of Israel were directed to keep this as an ordinance forever. This ritual was commanded to be kept once a year by the Father according to his will and Christ who followed the fulfilling of it would not have altered anything about it since he always followed what he sees the Father do.
IMO: You are focusing too much upon the "day", as in the 14th. The 14th itself in not an "appointed" day, it is the sacrifice that is "appointed". The Passover is not a day, it is an appointed sacrifice within a given month(s), upon a given day, at the given time(frame). By the time that sacrifice is roasted whole, it was partaken of upon the 15th. If you will pardon the expression, it is the meal which "kicks off" the Feast upon the 15th. The 15th is an appointed time, an appointed day. It was upon the 15th, that the blood was a covering from destruction. It is the 15th that is the memorial. It is the night of the 15th, that since YHVH kept watch through the night to deliver them from bondage, so also shall we keep watch through the night unto YHVH 'Eloheynu.
If for any reason someone is away upon a journey, or
unclean on account of a dead body (I wonder why <grin>), the
Passover, the sacrifice, may be observed in the second month. It is not the "day", it is the "sacrifice". However, that being said, even should someone be unclean on account of a dead body, the 15th day of the first month, is still the appointed time. Is still the memorial. It is only the sacrifice that is allowed within the second month.
So for me I see this ritual being continued according to its fulfillment just as God intended it to be observed as he showed them from the beginning of the agreement. The only difference now is that we can tell our children that we do this thing because it is the sacrifice of the Lord who gave his life (life is in the blood) to cover our past sins. All the symbolism of the prophetic past is fulfilled by Christ but the times defined according to Gods will would carry on even to the point that it would be done in the promised land which of course the chosen of God have yet to inherit.
I do understand your thoughts and position, I have walked in that place.
Let us just remember, it is the 15th which is the appointed memorial.
As for myself, I shall continue in what I have been convinced thereof: To keep the Feast, which is, or should I say, starts the 15th, to keep watch through the night. As for the "Last Supper", as oft as I break bread, I shall do so in memory of our Messiah. With a raised loaf. Any month, any week, any day or everyday. And yes, I do know those who only keep the evening beginning the 14th. I know those who "break bread" at any given time, and also maintain doing so upon the 14th and keep the 15th. The "Last Supper" does not replace nor change the appointed time which is the 15th. Only the reason for our memorial has changed, not the time of the memorial / Feast.
So to conclude: I must conclude that the inventor of the bread slicer was the anti-christ! That inventor, attempted to stop us from "breaking bread" together!
<hearty chuckle>