You know Christianity is Jewish because it infiltrated European soil, appropriated folk traditions and passed them as its own, destroyed, twisted and inverted everything it touched.
If you need to, and are desperate for a "savior" of the White race, that's Adolf Hitler.
It is his spirit that is risen from the grave for the world to know that he was right.
"Christians can think of themselves as anti-Jewish without understanding that they are the ultimate conclusion of Judaism."
— Friedrich Nietzsche