I'm going to go out on a limb and say that isn't going to be happening for this particular individual.
If you think an 8 year old should read the bible, it makes me think you haven't actually read the whole thing. Some pretty atrocious stuff in there.
I mean, if you are reading it together you can skip over those parts? Or explain them in context? Better yet, get a bible more suited for children. The real thing is so dry I feel it'd be nearly impossible for children to take any interest.