you forgot the part with judaism core scripture being also christianity core scripture. they just use different additional texts. they have the same creation myth. they worship the same one deity, and the main cause of animosity between judaism and christianity is thinking that other religion worships the deity wrong. it's a typical denominational feud, functionally the same as one between catholics and protestants for example. but it will never come to actual existential harm to other party, because it will also mean self-harm, due to both being codependent parts of the whole, one great nameless religion that we refer to as "abrahamic religions". seriously, the ability for mental compartmentalization that local christards display is truly impressive. i guess it ain't easy being anti-semitic spiritual semite.
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