I might be wrong, but I imagine that most people would say - Satan has sex with a woman through a zombie man, therefore evilness is passed to the kid. Especially, if the kid is the AC. Are you over thinking this? The spiritual side of Connor should be powerful to manipulate the physical world.
And of course! This is just brainstorming!
I forgot to answer this. I'm not overthinking this. It was an easy decision and a simple, elegant, and complete solution. I chose human DNA as the way to pass on superpowers to Connor. If I had made it spiritual powers, then how would that have worked (see my previous posts where I discuss other possible options and the challenges with them)?
My way ensures that Connor gets his powers from Satan, is also human, and is not inherently evil. The fact that Satan used his powers to animate a zombie and rape Campagna, inseminating her with zombie DNA, does not in any way explain how evilness could have passed to Connor. Answer: It didn't. He's human, he sins, he's under Satan's powerful influence as a child, but he is not intrinsically evil. Any human in Connor's place would have almost certainly turned evil, but Connor is partially protected by his ancient soul, which has the benefit of having lived in Old Testament times and has a strong sense of right and wrong, even while only just beginning to reawaken.
Since Satan altered the DNA in the zombie sperm, I choose to refer to Connor as part demon and as having inherited his powers from Satan. Technically, he "inherited" nothing from Satan in the way we think of inherited, not even anything demon like. But it's as close as a demon can come in my story to creating a human offspring.
Although there are a number of ways to pick apart my solution as not being biblical, my story is on a different timeline that does not require me to arrive at the same outcome as our version of Revelation. Within my story's universe, it holds together with all the other elements of my universe. And if offers a simple explanation of how all this is possible without handwaving.
This is the best I can come to explaining my reasoning to you, George. If you don't buy it, we'll have to agree to disagree. And there's plenty more to disagree on, including how a soul could have multiple personalities and reincarnation of the ancient biblical figure.
In case anyone is interested, the identity of the biblical figure is given in the final chapter of the first draft. Can you find it? I practically hit the reader over the head with it, although readers won't realize that until they learn Connor is a reincarnated being.