You have to be the only person in all the Torchwood discussions I have ever been in to draw that conclusion out of the episode. Since Jack is effectively immortal, by the physics of the story universe it is hardly a miracle, more a Deus ex Machina they tend to use too much. Nor would I call his friends apostles, I think you are reading too much into the narrative. Or maybe not, the show writer may have been playing the resurrection part up for it, it is a common enough trope.
I really thought the last two seasons were more annoying, particularly the whole Gaia earth line and immortality stuff sort of jumped the shark for me.
Actually one of the interesting aspects of the Doctor Who universe is they always try to have a techno-babble science explanation behind anything supernatural. Demons, Ghosts, Gods, and other supernatural critters will appear but they always wind up, in the end, being some sort of super powerful alien or something.