I have known folks who got married with a large age gap and as a minor.
I know a couple where she was 17 and he was mid/late twenties. The parents signed off and ten years later they have like 4 kids and are ridiculously happy now. I don't really know what the motivating factor was (it was weird to me too, frankly), but they are now as standard/healthy a couple as you could imagine.
They are neither of them religious.
I know a couple who married at 19 and 26, with their nearly-3yo child in attendance. The child
was an accident, and
may have set the initially more tenuous relationship in stone, but they're still together decades later. I think sometimes things like this go on a lot, with varying details
1, and
sometimes they work and
sometimes they don't. The latter instances, and worse, are more noted and should definitely not be allowed to be too common. But I suppose you can't legislate uniformly, fairly
and compassionately, without an element of precognition.
Religion played no part in any of this, but we're comparatively secular about many things around here.
1 My own parents had more than a decade of difference between them, but neither were so young at the time of their wedding, and there was just over a year of gap between their marriage and my arrival, so 'twasn't because of/despite me at least, back in days where it might have mattered more - even amongst the unreligious.