Pesach (Passover) begins today at sundown in Israel.
Passover is one of the most important Jewish holy days and deserves our attention.
Exodus 12
1 Now the LORD spoke to Moses and Aaron in the land of Egypt, saying,
2 “This month shall be your beginning of months; it shall be the first month of the year to you.
3 Speak to all the congregation of Israel, saying: ‘On the tenth of this month every man shall take for himself a lamb, according to the house of his father, a lamb for a household.
5 Your lamb shall be without blemish, a male of the first year. You may take it from the sheep or from the goats.
6 Now you shall keep it until the fourteenth day of the same month. Then the whole assembly of the congregation of Israel shall kill it at twilight.
7 And they shall take some of the blood and put it on the two doorposts and on the lintel of the houses where they eat it.
8 Then they shall eat the flesh on that night; roasted in fire, with unleavened bread and with bitter herbs they shall eat it.
11 And thus you shall eat it: with a belt on your waist, your sandals on your feet, and your staff in your hand. So you shall eat it in haste. It is the LORD’s Passover.

Therefore purge out the old leaven, that you may be a new lump, since you truly are unleavened. For indeed Christ, our Passover, was sacrificed for us. Therefore let us keep the feast, not with old leaven, nor with the leaven of malice and wickedness, but with the unleavened bread of sincerity and truth. 1 Cor 5:7-8
Jesus has fulfilled Pesach for us so that we are no longer required to kill the lamb or shed the innocent blood.
I, for one, am thankful that Jesus has paid the price.
Should Christians keep the feast?
There are those on both sides of the issue.
I see nothing wrong with remembering it in some spiritual way. It may help us to keep in mind and see more clearly just how special the sacrifice of Jesus was for our sins.