Nowadays, many Christians insist that the feasts of the Old Testament were abolished, there is no longer a need to observe the feasts in the New Testament era.
And they say there is no need to observe the Passover for the same reason either.
They say that all the feasts are abolished, but they keep Easter Nowadays.
Passover and Easter are both God's feasts, but they say that they don't have to keep the Passover, then why do they celebrate Easter?
Their arguments are too contradictory.
If God's feasts are to be observed, both feasts are must be observed.
If you don't need to keep God's feasts for the same reason, they shouldn't keep both.
They celebrate Easter because they have a hope of resurrection.
Then, which is the day when we fulfill the hope of the resurrection?
It is the final judgment day when Jesus comes along with the angels.

1 Thessalonians 4:16-17 For the Lord himself will come down from heaven, with a loud command, with the voice of the archangel and with the trumpet call of God, and the dead in Christ will rise first. After that, we who are still alive and are left will be caught up together with them in the clouds to meet the Lord in the air. And so we will be with the Lord forever.

When this world is judged we will be resurrected.
So Jesus promised to bring us back to life in the last days.

John 6:53-54 Jesus said to them, "I tell you the truth, unless you eat the flesh of the Son of Man and drink his blood, you have no life in you. Whoever eats my flesh and drinks my blood has eternal life, and I will raise him up at the last day.

When is the last day? It's time for judgment day.
We must believe in Jesus to fulfill our hope for resurrection.
How can we receive the blessing of resurrection?

Jesus said that he would give life to those who eat and drink his flesh and blood on the last day.
If we do not eat and drink Jesus' flesh and blood, we cannot be resurrected.
How can we eat and drink the flesh and blood of Jesus?
The answer is the Passover.
Those who receive eternal life through the Passover will be revived on the last day.

Luke 22: 19-20 And he took bread, gave thanks and broke it, and gave it to them, saying, "This is my body given for you; do this in remembrance of me." In the same way, after the supper he took the cup, saying, "This cup is the new covenant in my blood, which is poured out for you.

Jesus promised the Passover bread and wine as the flesh and blood of Jesus.
Jesus commanded the Passover to celebrate, but many Christians do not.
Only those who celebrate Passover can be blessed with resurrection.
Christians who do not observe Passover could not be blessed with the resurrection.