Fine, then you are also of the house of Israel whether you like it or not. I am a Christian BECAUSE I entered the house of Israel and into the new covenant through the shed blood of Jesus Christ. There is no other way to be a Christian because there is no way you can enter into the new covenant without being of the house of Israel or of the house of Judah.
Do you believe in the Trinity, i.e. that in the unity of the Godhead there are Three Persons, the Father, the Son, and the Holy Spirit, that these Three Persons are truly distinct from one another, and yet there are not three Gods but one God?