Do you mean that people of other religious faiths must depend on the tenets of another religion to establish the existence of their rights? Their right to self defense belongs to everyone, not just Christians and Jews.
Do you mean that people of other religious faiths must depend on the tenets of another religion to establish the existence of their rights?
Of course not.
I wouldn't read too much into that. The author knows he's speaking to a primarily Christian audience. Had he thought for a moment, he might have refrained from adding that to his post.