I found this video extremely helpful in understanding the timeline of the last supper and passover. one of the things they do (and something i have been up to for awhile but haven't done on the passover topic) is breakdown the language used in the gospels that describes the timeline. our english translations get certain words wrong that result in the gospel accounts seeming to contradict each other. this video breaks down those verses and explores the language used. they show, from the scripture, the complete passover timeline. why is this important? passover was given to the israelites (the name israel was given to jacob after he contended with yahweh all night in order to receive a blessing and means "one who contends with yahweh") as a memorial of the time yahweh passed over them and slew the first born of all the egyptians. it was a memorial of that event but also a prophecy of future events. it was a prophecy of the future sacrifice of yeshuah, the unblemished lamb of yahweh. it was a prophecy of the crucifixion. this video breaks down the complete timeline and shows us how yeshuah was tried (inspected) just as the passover lamb was to be inspected for several days prior to sacrifice, was crucified at the time the passover lambs were being killed, and died before the passover lambs were to all be killed, and was then resurrected on the feast of first fruits (the day immediately following the weekly sabbath that occurs during the feast of unleavened bread), and more. there are seven biblical feasts listed in leviticus 23. these feasts are prophecies (shadows) of things to come. yeshuah fulfilled the first four, though there is some argument that pentecost was only partially fulfilled and will see complete fulfillment on yeshuah's second coming. this video highlights the purpose and importance of the biblical feast days and shows why we should still keep them.