"Christianity is a kind of Judaism..."
That's why Jews were expelled from England, Spain, France, etc... by the Inquisition, right?
Christian theology is that it has replaced the covenant with a new one.
Christianity largely sees Judaism is obsolete. That's kind of it's point.
Jews don't think Mosiach has come yet, and when he does, the eternal laws of the Torah will all still be binding... ALL, because when our Mosiach comes, the Temple will be rebuilt, not destroyed as it was after Jesus.
Too broad of a brush stroke there, friend.
Like, for instance, saying the Kairites and the Rabbinicals are all the same... Jews... right?
Not all Xtians persecuted, and not all Xtians hold to 'Replacement Theology'.
No I don't think so. The old covenants, (Abraham, Isaac, Jacob, et. al.) are still in effect. God does not renege on contracts. However, the new and ever-lasting Christian covenant applies to all Christians and to Jews that will finally believe in Christ. As it says in the Zechariah chapter 11...they will look on him whom they have pierced and weep as a parent that has lost an only son...etc.
The Bible says that it is because His people rejected Him the judgments came upon Israel. They rejected the Messiah, their King. Not to worry when He comes the second time Israel will embrace Him.
Isaiah 53:3 He is despised and rejected of men; a man of sorrows, and acquainted with grief: and we hid as it were [our] faces from him; he was despised, and we esteemed him not.
You may have been told that this verse and all of Isaiah 53 refers to Israel but I ask you does Israel despise itself? Does Israel not esteem itself? Can the people of Israel hide their faces from their own selves? If you read the book of Isaiah chapter 53 anew can you not help but to see that only Yehoshua (Jesus Christ) can fulfill the role of the Messiah of Israel? He is the one who was despised and rejected of men. He is the one who was cut off from the land of the living for the transgressions of my people.
In the book of Zechariah it says that the Messiah will come back after God delivers Israel from all the nations that that are out to destroy Israel. When He comes back Israel will recognize the one whom they have pierced as the Messiah. They will have great sorrow when they look upon Him. Jesus was pierced and so was the Messiah. This piercing had to take place in the past before this prophecy of His coming so there would have to have been a first coming. Israel will mourn because they will realize that they had for so long rejected Jesus their Messiah. I can only just imagine what that will be like.
Zec 12:9 And it shall come to pass in that day, [that] I will seek to destroy all the nations that come against Jerusalem.
Zec 12:10 And I will pour upon the house of David, and upon the inhabitants of Jerusalem, the spirit of grace and of supplications: and they shall look upon me whom they have pierced, and they shall mourn for him, as one mourneth for [his] only [son], and shall be in bitterness for him, as one that is in bitterness for [his] firstborn.
Zec 12:11 In that day shall there be a great mourning in Jerusalem, as the mourning of Hadadrimmon in the valley of Megiddon.
Zec 12:12 And the land shall mourn, every family apart; the family of the house of David apart, and their wives apart; the family of the house of Nathan apart, and their wives apart;....