Question: You desperately need to study the Greek Bible, both Old and New Testaments. You undoubtedly know that the Passover at the Exodus from Egypt was "everlasting." Why, then, did it change at Christ's crucifixion? As for the "everlasting" covenant with Abraham...Christ was the "seed" of Abraham and the fulfillment of all Old Testament eschatology [and] Paul wrote that there is no difference in Jews, Gentiles, male or female, slave nor free, but in the Church all belong to Christ (Gal:3:28). Israel was ended! The old covenant became obsolete (Heb:8:13).
Your "faultless" doctrines come ultimately from Jewish thinking. Are you sure that you are not Jewish...? Your eschatological errors didn't significantly exist in Christendom until Edward Irving, John Darby, the Plymouth Brethren, et al., came along with Jewish ideas. Will Christ rule over Israel and the world from Jerusalem? Absolutely not! "Israel" has reemerged as the beast system in Revelation....
Response: We must be reading different Bibles. The Passover did not "change at Christ's crucifixion." The "last supper" was not the "last Passover" because it was not the Passover at all but "before the feast of the Passover" (Jn:13:1). (The morning after the last supper Israel had not yet eaten the Passover nor had the lambs yet been slain - Jn:18:28.) The "last supper" was held the night after sunset marked the end of Nisan 13 and beginning of the 14th (the Jewish day went from sunset to sunset). The 14th was "the day of unleavened bread, when the passover [lamb] must be killed" (Lk 22:7) by all Israel before sunset in the "evening" (Ex 12:6), i.e., the afternoon following the last supper.
During the night that began the 14th the disciples started the lengthy preparation for the Passover in the upper room, where they ate supper together. All leaven had to be found and removed in preparing for the Passover supper to be held the following night. The main "preparation," of course, was the slaying of the lamb, which occurred the next afternoon (as prophesied) when Christ was being crucified (Jn:19:14). There was no lamb slain for the last supper as there would be the following afternoon for the Passover.
The Passover is a memorial of the deliverance of the children of Israel from slavery in Egypt, a historic event that nothing can change and that will be commemorated forever. That it is still kept by Jews alone proves that it was their ancestors, not Arabs', who were slaves in Egypt for 400 years then delivered—irrefutable proof, therefore, that they, not Arabs, are the "seed" of Abraham who inherited the land of Canaan (Gn 15:13-16) that became Israel, and which belongs to them to this day.