I'm having an interesting and anonymous conversation via text-messaging with someone curious about the similarities between the Egyptian story of Horus and the Christian story of Jesus. This person is wondering how Christians can claim one story is a myth while claiming the other to be an historical reality.
While I can't speak to the Horus story, I can give some resources that point to the historicity of Jesus' birth, life, death and resurrection.
The Reason for God by Timothy Keller
The Case for Christ by Lee Strobel
Simply Christian by NT Wright
And then there's sermon I preached on Easter 2008. It might help explain the idea I was proposing of all the other resurrection stories being tremors of a coming event or even echoes of what has happened. Echoes of Easter