At what is called the Last Supper Jesus took bread and blessed it saying, " This is my body given for you...." and then He lifted a cup, blessed it and said, " This is the New Testament in my blood....." New Testament? What New Testament? What blood? How could anyone bring in a new law, it just wasn't done except by God and He had never suggested a New Covenant in a way that the Israelites could accept.
Indeed during the meal and Jesus' sayings the disciples weren't exactly on song regarding this New Testament at all. There wasn't one then and each of them if they had thought about it seriously would have said immediately that only God can change a law with Him actually dying but as we know God doesn't die. So, how in our wildest dreams can Jesus infer this New Law, Him being a man? I mean every Law stood just as when it was given so what was Jesus talking of? Firstly He would need to be God and secondly He would have to die for any Law to be changed.
In other words He would have needed to make the Laws in the first place to be able to change any in the second place. And taking into account that He would need to die so that the legality of it is right, He would also have needed to be alive to do so. So, here is the crux of the matter. The Father having given Him all authority in heaven and earth, I say it was Jesus who not only created all things but also created all the Laws that the Jews were given. That is how the New Testament in His blood was accomplished.
He died on a cross and rose again to the glory proving that by the introduction of a New Testament in His blood actually happened. He proved that He must be God for the legality of Law change to take place and the myriads of converts from Genesis to Revelation are testimony to these things. And, when the great day comes it is He who will judge all the world from Genesis to Revelation wherein all will bow the knee and confess that Jesus Christ is Lord, is God. Abel saw it, Noah saw it, Abraham saw it as did Isaac, Jacob, David, Daniel, Samson and many others, do you?