And the other 49% don’t believe the Bible, and are therefore, not Christians.
It might appear to some (too many, really) that God has set aside Israel, but in reality He is not done with them, and the seven years of Tribulation will bring around a remnant of Jews to believe and be ushered into the coming Millennial reign of Christ.
It is all explained in The Word of GOD, a supernatural messaging vehicle ONLY God could write. To read it and not believe the data transfers is a silly, misguided position too many follow today as deception rises ever higher.