Passover is a biblical celebration instigated by God at the exodus of the Jews from Egypt. It is also a model or type (or picture) of what Jesus Christ did for us. In Exodus chapter 6 we read:
Passover is not one celebration but three: Passover, Firstfruits and Unleavened bread. They run together and overlap.
At Passover the Lord Jesus Christ died, as the perfect Passover lamb:
For Christ, our Passover lamb has been sacrificed. 1 Corinthians 5:7 (NIV)
The lamb needs to be perfect:
Your lamb shall be without blemish [defect NIV], a male of the first year. You may take it from the sheep or from the goats. Exodus 12:5 (NKJV)
[A] lamb without blemish and without spot. 1 Peter 1:19 (NKJV).
Jesus Christ, the Passover lamb died according to the prophecies of Isaiah:
“He was led as a sheep to the slaughter;
And as a lamb before its shearer is silent,
So He opened not His mouth.
In His humiliation His justice was taken away,
And who will declare His generation?
For His life is taken from the earth.” Acts 8:32 - 33 (NKJV)
But on the day of the Firstfruits Jesus rose from the dead.
But now Christ is risen from the dead, has become the firstfruits of those who have fallen asleep. 1 Corinthians 15:20
But each one in his own order: Christ the firstfruits, afterward those [who are] Christ's at His coming. 1 Corinthians 15:23
`He has brought us to this place and has given us this land, "a land flowing with milk and honey"; `and now, behold, I have brought the firstfruits of the land which you, O LORD, have given me.' Then you shall set it before the LORD your God, and worship before the LORD your God. (Deuteronomy 26: 9,10)
He has risen and lives being the first who has died and risen, setting the pattern of those that follow: this being the assurance of resurrection of those who trust and believe in Him. Furthermore, He being holy has made us to be holy:
If the part of the dough offered as firstfruits is holy, then the whole batch is holy; if the root is holy, so are the branches. Romans 11:16 (NIV)
The Feast of Unleavened Bread speaks to Christians as ones who live a holy life – without sin. The picture of yeast portrays sin, which is thoroughly cleaned from the house prior to the Passover festival.
I will write little here – much has been written, and even a cursory glance at the literature (I do not mean Google) will reveal that Easter is a pagan festival, which the Catholic church attempted to Christianised. The problem was the Catholic church had hopelessly lost its way, substituting the Word of God for a lie and was, and still is, in absolute error, which the early reformers, some 500 years ago, pointed out; of which many lost their lives at the hand of the pope and papists for doing so. Passover was of course accepted and celebrated by many early Christians (Acts 2:1; 12:3; 20:6; 18:21). But very early on the Catholic popes began to celebrate Easter instead of Passover. Anti semitism was always just beneath the surface of the early church, and many modern churches, with many popes being extremely anti-semitic: hence any excuse to rid itself of a so called Jewish festive would do – even if it meant substituting with a pagan anti-Christian festival. This Constantine did in about 325, stopping the church celebrating Passover and substituting it with the pagan festival of Easter.
What was Easter, with its buns and eggs and rabbits?
Easter, "bear its Chaldean origins on its very forehead. Easter is nothing else than Astarte, one of the titles of Beltis, the 'queen of heaven,' whose name, as pronounced by the people of Nineveh, was evidently identical with that now in common use in this country." Hislop, Alexander The Two Babylons: Romanism And Its Origins, 1916) <http://www.biblebelievers.com/babylon/> (accessed 14 April 2019)
A dictionary also gives the following: “from name of old Teuton goddess of spring”. Easter follows lent – which is an anti-christian festival, also derived with the ancient festivals of the pagans. The forty days' abstinence of Lent was directly borrowed from the worshippers of the Babylonian goddess. In many parts of the world lent was also observed (see Hislop for further details): The Mexicans observed "Three days after the vernal equinox...began a solemn fast of forty days in honour of the sun." The forty days of “weeping for Tammuz” (A Babylonian god of fertility, according to the online Encyclopaedia Britannica) became Lent; and at the close of Lent came Easter Sunday. And of buns: the cakes or bouns or buns (See Hislop) was used to worship the queen of heaven and became the hot cross buns. Eggs have been used by the pagans the world over by those who do not know the true source of the soul – the Lord God of Heaven - for example, the ancient Druids bore an egg, as the sacred emblem of their order.
Note many do not find that that Good Friday to be the day of crucifixion – the Lord spent three days and three nights in the tomb – a simple counting of the days and a careful reading the Scripture places the crucifixion on some other day – perhaps Wednesday (Chuck Missler seemed to have favoured this day, and he is was far greater scholar than I will ever be e.g. < http://www.khouse.org/articles/1995/37/ > accessed 14 April 2019).
For a Christian, the remembrance of Christ’s death and resurrection should take place every first-day of the week (Acts 20:7, Revelation 1:10) – called the Lord’s Day otherwise Sunday by pagans. There is no need to celebrate Easter, although personally I like to celebrate Passover, as it brings to full attention the fullness of the grace of God.