The Feast of Unleavened Bread is part of Passover -- It is actually concurrent with Passover. The seven days following Passover, the Jews ate only unleavened bread (no yeast) with their meals. Prior to Passover, they cleanse all yeast from their homes. In Scripture, leaven is a picture of sin. Removing all leaven from the home is a picture of cleansing one’s life of sin.
The celebration of Passover was to remind the Jewish people of the time when they had to leave in such a hurry that there was no time for their bread to rise; and a reminder of their deliverance from Egypt.
On the first and seventh day of the feast, the people were to hold a sacred assembly. They were reminded of the Exodus because it was the greatest demonstration of God’s deliverance in the Old Testament. God wanted His people to know and trust Him as the God who delivers. The focus is the same year after year.
God declared that eating the Passover meal with its special, unleavened bread was the sign of faith that indicated you were a true member of the covenant community of Israel.
Prophetic Fulfillment -- Jesus knew no sin, nor was any deceit found in Him. He was unblemished and spotless. He was made sin for us that we could be made the righteousness of God in Him. 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 Corinthians 5:7-8). Unleavened bread, or matzah, has stripes. “
"By His stripes we are healed.” Matzah is also pierced. “They shall look upon me whom they have pierced.” Matzah is pure, without any leaven, as His body was without any sin. The custom during Passover is to bury (fold in a towel), hide, and then resurrect the second of the three pieces of matzah (matzot, plural), which is the middle piece, representing the Gospel (Afikomen). The Jewish people today act out Christ’s resurrection and don’t even know it!
The exodus of Israel in the Old Testament is an illustration of God’s salvation. The New Testament crucifixion was the ultimate exodus because it delivers not just from the bondage of a controlling Pharaoh, but from bondage to sin itself. It provides for eternal life, not just life in an earthly promised land.
Old Testament: Exodus 12:14-20; Leviticus 23:6-8; Deuteronomy 16:8
New Testament: 1 Corinthians 5:7-8, 2 Corinthians 5:21, 6:14-7:1; Philippians 1:21, 2:3-5, 3:8, 4:13