My position is that until someone demonstrates that there is something that is supernatural or that there is a spiritual realm, any discussion of miracles is moot. Any explanation, including the authors knowing lied (I don't think that's the case), is more plausible than that any of it happened.
The problem is that there appears to always be special pleading going on with the supernatural or spiritual so there's no real way to investigate, let alone measure it, in a way that can't be chalked up to coincidence, confirmation bias, etc. If there was something like magic or the like and we could reasonably, with particular technology or such, verify and confirm that there is some set of rules that governs how it works, then fine, it'd be something to take seriously.
But abstractions that tend to just be people's apophenia or magical thinking about finding significance in life are little more than a crutch, practically speaking, instead of being honest and acknowledging abstracts as reality insofar as they are practical and not merely expedient or sentimental.
When they define it as supernatural, the thing in question has become, effectively, just something they can "justify" by some form of rationalism or rationalizing and keep it above any kind of investigation we'd apply to scientific models, including those that are trickier, like big bang cosmology or other structures we haven't investigated directly, but nonetheless have decent evidence to conclude they are the best explanation for the phenomena we observe
Lying seems like one of the least likely explanations if we consider that lying entails that you know something isn't the case and are asserting otherwise, when with ancient people, they likely didn't know any better, so they were more just mistaken in the same way those who believed in demon possession or miasma as explanations for disease were wrong, not lying.