Ok. So let me do it for you.
Luk 22:14-20 And when the hour came, he reclined at table, and the apostles with him. And he said to them, "I have earnestly desired to eat this Passover with you before I suffer. For I tell you I will not eat it until it is fulfilled in the kingdom of God." And he took a cup, and when he had given thanks he said, "Take this, and divide it among yourselves. For I tell you that from now on I will not drink of the fruit of the vine until the kingdom of God comes." And he took bread, and when he had given thanks, he broke it and gave it to them, saying, "This is my body, which is given for you. Do this in remembrance of me." And likewise the cup after they had eaten, saying, "This cup that is poured out for you is the new covenant in my blood.
Your right, it does encompass the whole of the Bible. The new covenant was directed and exemplified in His blood. Why the blood? Why not the Body? Do you know much of the passover? Do you understand the significance? Tell me. What correlation does the passover have to do with the law?
I can tell you that Jesus is now our passover, the passover was a shadow of things to come.
Just as the law was a shadow of things to come, and now Jesus is here IN us, and He is now our Sabbath.
Do you see why God gave Israel a Sabbath Day? Because they did not have His Spirit for rest, all their work was done by flesh, the only time they could rest is on the Sabbath.
The Sabbath Day was a shadow for Jesus.
Now that Jesus is here, He lives in US, our Sabbath.
The sabbath day was never, ever given to the Gentiles.