Christ's blood does much more than remit sin; it gives eternal life. The Passover wine represents the blood of the covenant, by which we are made complete.
God takes special care to teach Israel about the sacrifices, which involved shedding the blood of countless animals to remind the people of their sins.
'Blood is thicker than water' indicates that ties to the family come before any other alliances. Yet the 'blood' could also refer to the sealing of a covenant.
In Psalm 22, which prophesies of Christ's suffering, He says 'But I am a worm...." His reference is to a tola worm, which is rich in symbolism and meaning.
The annual reaffirmation of the covenant through the Passover is at the core of an on-going relationship with the Father and Son, beginning the perfecting process.
If we overlook God's deliverance or neglect the eating of unleavened bread, we will be unable to perform the putting away of sin that God requires.
We live in a time when people have acquired a weak sense of obligation to family, society, or nation. Because sin cannot be undone, all are debtors to God.
Neither Christmas or Easter appear in the Feasts of the Lord, but we find plenty of emphasis on the resurrection and ascension of Christ in the Holy Days.