Interplanner,
I guess that I don't understand what you are talking about! All of the people at the Last Supper were Jews, The Apostles!!! even Jesus was called an Apostle, Hebrews 3:1.
A prophecy at Daniel 9:24-27, told about the time that Jesus, the Messiah, Christ would arrive, and about Jesus being sacrificed at the middle of the last week of years. Then the prophecy would extend for another 3 1/2 years, during which time only Jews could become part of The Christian Congregation. In 37 CE. Cornelius a Roman Centurian became the first gentile to become part of the Christian Congregation. This group was Called Christians at Antioch, Acts 11:26.
God had told Jeremiah to write a prophecy, telling the Jews, His chosen people that He would start another Covenant, that would not be like the Mosaic Law Covenant, that instead of being written on stones it would be written on hearts, Jeremiah 31:31-34, 2Corinthians 3:3.
That New Covenant was instituted by Jesus, at the Last Supper, on the night before Jesus died, Luke 22:14-20, 1Corinthians 11:23-26. This Covenant superseded the Mosaic Law Covenant, and was a much better Covenant, because it was based on the blood of Jesus instead of the blood of goats and bulls, Hebrews 9:11-26.
Everyone who was under the Mosaic Covenant was under a curse, because no one could obey it perfectly, and if you broke the law in one thing, you broke the entire Law, James 2:10, Galatians 3:10-14, Acts 15:7-11, John 7:19. If you read Hebrews 8:6-13 you will see why this New Covenant was much better that the Mosaic Law Covenant.
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