Not only does Pesach (Passover) commemorate the L-rd freeing Israel from the bondage of Egypt, it looks forward to Yeshua freeing all who accept Him as their Pesach lamb.
Sh'mot 12:1-2 Now the L-RD said to Moshe and Aharon in the land of Egypt, "This month shall be the beginning of months for you; it is to be the first month of the year to you.
This is the first month on the religious calendar but the seventh month on the civil calendar.
Sh'mot 12:3-4 Speak to all the congregation of Israel, saying, 'On the tenth of this month they are each one to take a lamb for themselves, according to their fathers' households, a lamb for each household. 'Now if the household is too small for a lamb, then he and his neighbor nearest to his house are to take one according to the number of persons in them; according to what each man should eat, you are to divide the lamb.
On the tenth of this month - this would correspond to the day Yeshua made His triumphal entry into Yerushalayim.
John 12:12-13 On the next day the great multitude who had come to the feast, when they heard that Yeshua (Jesus) was coming to Yerushalayim (Jerusalem), took the branches of the palm trees, and went out to meet Him, and began to cry out, "Hosanna! Blessed is He who comes in the name of the L-rd, even the King of Israel."
Sh'mot 12:5-6 'Your lamb shall be an unblemished male a year old; you may take it from the sheep or from the goats. 'And you shall keep it until the fourteenth day of the same month, then the whole assembly of the congregation of Israel is to kill it at twilight.
Your lamb shall be an unblemished male - On a different level, Yeshua was unblemished by sin.
To kill it at twilight - Josephus tells us that at the time of Yeshua this was about 3:00 in the afternoon. This was the time of the day that Yeshua died for our sins. It was on Pesach many years later.
Sh'mot 12:7-11 'Moreover, they shall take some of the blood and put it on the two doorposts and on the lintel of the houses in which they eat it. 'And they shall eat the flesh that same night, roasted with fire, and they shall eat it with matzah (unleavened bread) and maror (bitter herbs). 'Do not eat any of it raw or boiled at all with water, but rather roasted with fire, both its head and its legs along with its entrails. 'And you shall not leave any of it over until morning, but whatever is left of it until morning, you shall burn with fire. 'Now you shall eat it in this manner: with your loins girded, your sandals on your feet, and your staff in your hand; and you shall eat it in haste-- it is the L-rd's Pesach (Passover).
The corresponding letter to this chapter is Lamed -teaching and learning; transition.
This should point us to our ultimate eternal Pesach (Passover) Lamb - Yeshua HaMashiach. He only had to die once for our sake so we could enter the door of eternal salvation. We do not have to look for atonement year after year when it comes to this blood covenant.