All Covenants were sealed with blood ...His blood would seal the New Testament ...it had not yet been shed..
So all the gospels up to the crucification were about the law, not the New Testament.
The Old Covenant people met God in the tabernacle ..the new Covenant has men indwelled by God. The saved became living tabernacles.
The Gospels reveal the divinity and humanness of Christ, they reveal Him as Messiah.
"Christ is the Mediator of the new Testament (Matt. 26:28, Mark 14:23,24; Luke 22:20 - see Heb. 8:6-9, 12:24). Our Lord said, "This is my blood of the New Testament." Therefore, the New Testament was to be established by the shedding of His Own BLOOD. When was His blood shed? Near the END of each of the accounts in the so-called "Four Gospels" (Matthew, Mark, Luke and John), on the cross, in the year A.D.29. According to Heb. 9:16,17, a testament is not valid unless there be the death of the testator. Therefore the New Covenant did not, indeed it could not begin until AFTER HIS DEATH and the BLOOD WAS SHED."
http://www.bereanworkman.com/miscellaneous/rdhowto.htm
This is not a reformed position, it is a theological one that I learned in a "Survey of the OT " At Houghton College taught by a Mennonite PHd in Theology
Funny, then why did He hold up the wine and say that it was His blood, the blood of the New and Everlasting Covenant?
And “take, eat, this is My body” about the bread?
Do you have difficulty taking Christ’s words seriously?
Um, they continued to meet in the Synagogues, follow Jewish worship practices and have Eucharist UNTIL they became a separate group after the fall of Rome. The old covenant was being followed by the members of the new covenant. There was a council about that. Remember?
This does not correspond to the book of Jeremiah (ch. 33). It is a Christian add-on. The OT does not say anything about anything dying before the New Covenant becomes "valid". That is something the Christians made up on the fly. The New Covenant was meant for the Jews and Jews only, the House of Judah and the House of Israel, with god inscribing his laws in their hearts; no one had to die and shed blood for that. The New Covenant did not "replace" the Old Covenant, as the book of Hebrews alleges (ch. 8), because God's covenant with the Jewish people is forever. The book of Hebrews was written for gullible, naive and superstitious Greeks who knew nothing of the Old Testament or Judaism.