Reminds me of a convo I had with a pastor of ours. He talked about an instructor at seminary who, any time a question came up that there wasn't an answer to, would dramatically and comically say, "It's a mystery."
Which is not a joke. Just as there are infinite mysteries of the physical universe, practically everything in the spiritual world is a mystery to human beings. And just like we try to understand the physical universe by peering through telescopes from one single point, we try to understand everything about the spiritual universe by reading the Bible. In both cases, it's obviously insufficient.
There is certainly an element of faith in any viewpoint in this area.