Luke 22:20 - "This cup is the new
testament in my blood, which is shed for you."
This makes reference to the old testament, or
covenant, that was made with the Israelites by
Moses. After declaring the covenant, Moses
took the blood of a sacrifice and sprinkled it
on the people. Christ is now presenting a new
covenant, and the ordinance that is related is
the sacrament, where we drink the "blood" of
Christ.
Matthew 25:1-13 - As Christ is talking
about the Second Coming, he tells a parable,
the parable of the Ten Virgins. The virgins
are evidently members of the church, as they
know about the marriage. They all had plenty
of time to get ready, to trim their lamps, and
to get enough oil. They had so much time, they
were even able to sleep! And yet, the five
foolish virgins weren't ready when the time
came. Because of that they lost the
opportunity to join in the feast.
Luke 22:10-13 - It's quite amazing how
Christ just has to speak and it's done. He
knows exactly where to find what he needs,
including a room for the passover. I wish that
I could do that... But on a more serious note,
we know that Christ doesn't just use his power
on a whim. He has a purpose for everything
that he does. Thus, this feast was obviously
very important. It was the moment during which
Christ established the new covenant that was
about to come to pass. He prepared his
disciples with a new ordinance that they
should perform in place of the old one to
remind them of the new covenant.