I've been thinking through the idea of alternate timelines some more to explain why the story's timeline doesn't match the Bible, which is of course from our real-world timeline. I think I need to find a better way to get our Bible into the story's timeline than to simply state that it "somehow" happened, perhaps because there is only one, inerrant God-inspired Bible across all timelines/realities, even though no other timeline except ours matches that Bible. It would be an interesting thing to discuss and try to explain that in the book, but I have no need or space for it.
The new, story timeline arose because of the wager (i.e., the story's timeline, where there is a Connor/wager, split off from the original timeline, where there was neither). A key question is, why does the new timeline not have its own version of the Bible, written prior to the wager being made? There ought to be biblical prophecies in the new timeline about Connor that pre-date the moment the wager was agreed to, which took us from the old, real timeline to the new, story timeline. Instead, the new timeline somehow simply ends up with the old timeline's Bible.
The best idea I can think of is to state that, before the wager, there was only one timeline, and once the wager was agreed to, the new timeline branched off from our old one, and both timelines (old and new) share identical history prior to the timelines splitting. As a result, the Bible, which was written for the original timeline (prior to the wager) is identical to the Bible in the new timeline since both timelines used to be one. I think that's a relatively straightforward explanation to wrap one's head around.
This issue only comes up because I want to leave the Bible inerrant while still explaining why the story timeline differs from it. Prior to the wager, the story timeline didn't even exist, so the prophecies could not have included information from it. Granted, God could have provided that information to the Bible's authors, but God had his reasons for allowing the prophecies to be written down in a way that only matched the old timeline, in which the Bible was written. It was left to Satan to take that into consideration, which he overlooked.
Instead, Satan read Revelation after it was first written and issued his challenge based on it, which split the new timeline off from the old one, with a Bible originally intended for the latter. The old timeline still exists, so there are today two timelines, and the prophecies are for the old one only. Now, is it fair for God not to tell Satan what will happen to him if he issues the challenge? I would say yes since, initially, the old timeline was all there was. Satan had yet to issue the challenge, creating the new timeline. He has free will, so he could have gone a third route that spared him from the Lake of Fire, but he saw the wager and the resulting new timeline as a way to defeat God and gain control over the Earth for all time.
As readers of Connor's story, we used to live in the old timeline, but we became part of the new timeline when it split from the former. There is now a Connor in our universe, and events will occur because of him that do not match our Bible, which is identical across both timelines.
Make sense?