You the cultic ignorant person who ignores history. The Bible is a Jewish

book, not a Gentile book. All the writers were Jewish

not Gentiles. Jesus was an observant Jew

not a Gentile. All his disciples were Jews

. Salvation is of the Jews

not Gentiles.
Your Christianity was born out of Judaism

probably my guess is when the second Temple was destroyed in 70 AD. I find some evangelical Christians are really ignorant of the Old and New Covenant and how they are connected. It would be to your advantage to study Church history and Biblical history to understand why you are so misguided in your thinking.
Shalom Aleichem
Obviously you need to study and understand the foundation of the New Covenant. I know it was prophesied in Jeremiah 31, but it actually began with the birth of Jesus. Yes, Jesus was the seed of Abraham and I honor Abraham as the father of those who have faith in God.
I don't deny the rich Jewish history of Christ, but once Christ came, the "Jewishness" takes a back seat to Christ Himself. That's the whole message given to Peter, James and John on the Mt. of Transfiguration. Matthew 17:1-8 Moses represented the Law, Elijah represented the Prophets (which essentially is the entire Old Testament), and Jesus represented the New Covenant. In that passage the Father tells Peter, James, and John: "This is My beloved Son, with whom I am well-pleased; LISTEN TO HIM!"
The Father is not telling them to set aside the Old Testament, or to reject it (because we still receive great instruction from it), but He is telling them that JESUS is the emphasis now, not the Old Testament. Christianity started when Christ was born, although it wasn't called that until Acts 11:26: "the disciples were first called Christians in Antioch." Christianity is simply the belief of those who follow Jesus' life and teachings.
The reason I call you cultic is simple: When I compare the teachings of Jesus, Paul, and all the other New Testament authors to your "teaching" and your words - they are not even similar, let alone the same. You don't sound like any of the New Testament writers. You sound like a confused Jewish "Rabbi" who is stuck in the past, who elevates his Jewishness over Jesus Himself and His life-changing teachings.
Listen to the words of Paul: "By referring to this, when you read you can understand my insight into the mystery of Christ,
which in other generations was not made known to the sons of men, as it has now been revealed to His holy apostles and prophets in the Spirit;
to be specific, that the Gentiles are fellow heirs and fellow members of the body, and fellow partakers of the promise in Christ Jesus through the gospel, ..." Ephesians 3:4-6
Your message is the Jews, the Jews, the Jews and NOT the Gentiles, NOT the Gentiles, NOT the Gentiles.
Judaism is just as cultic today as Islam or Buddhism or Mormonism.
It would be like an American who becomes a Christian - and all they can talk about is America and Americans and American history and American traditions, etc., etc.
The message of the New Covenant is Jesus, Jesus, Jesus - NOT the old wineskins (Jewish culture, traditions and rabbinic teaching), NOT Moses, NOT Elijah, NOT the Law.