How come hebrews are just jews?

the hebrews excisted before judism right? then moses came they converted to Judism,jesus most of them converted to christianity,Mohamed came most of both converted to islam...am i right? so the hebrews should be the ancestors of the palestinians..right? but jews who came to palestine from diffrent nations and... show more the hebrews excisted before judism right?
then moses came they converted to Judism,jesus most of them converted to christianity,Mohamed came most of both converted to islam...am i right?

so the hebrews should be the ancestors of the palestinians..right?
but jews who came to palestine from diffrent nations and just took that land because they are jews....is that fair?
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