PASSOVER, True Meaning 4|Ahnsahnghong!

In Romans 15:4, God said, For everything that was written in the past was written to teach us, so that through endurance and the encouragment of the Scriptures we might have hope." The Old Testament is a prophecy and shadow of which its fulfillment and reality is found in the New Testament. In the Old Testament, we read the origination (Exodus 12:1-14) of the Passover that God commanded the Israelites to keep in order to escape destruction and to gain freedom. Then what is its fulfillment in the New Testament?
In Matthew 26:17-19, Jesus Christ told His disciples to prepare to celebrate the Passover.In verses 26-28, Jesus Christ celebrated the Passover and said the bread is His body and the wine His blood. In the OT, the Israelites celerated the Passover to escape slavery but in the NT, why did the disciples need to celebrate the Passover? Why do we need to celebrate the Passover? We are also slaves. Not physical slaves bound by chains but according to the Bible, we are slaves to sin and death (John 8:34)!
After the Israelites, celebrated the first Passover, they were on their way to Canaan by way of the Desert of Sinai. Spritually, we are also in a desert but this desert is our desert of faith!
Let's find out the fulfillment of the 2nd account of the Passover.