Eventually you'll reach a stopping point. The believers go a step behind the nonbelievers, a step into the unseen, that's all. Up until the beginning of the universe we're all in agreement because things exist, lol. And there's no contradiction in the definitions I'm using, that's just semantics and often due to the Frankenstein monster of inconsistencies that's Roman Catholicism and everything that came from it. You have to think about it without labels, the way the Greek philosophers did, and assume corruption in much of the remaining scriptures. And blood sacrifices? Are you referring to Abraham? God doesn't require blood, just faith and acts, we're not Aztecs! But if you believe in the unseen and in a judgment post death, you believe in life after death, and if you do and God Himself asks you to sacrifice your child, is it even a negative or are you, with 100% certainty, sending your kid to Heaven? Not that it's an easy pill to swallow, there's a reason Abraham's name is known today, but that's not because BLOOD FOR THE BLOOD GOD, but it fits as an acknowledgement of our ephemeral nature and 'meaningless existence' and a test of faith (everyone dies in the end too...).

If you ever wanna talk about it in earnest, I'm up for a call. These convos are not very productive in this format, lol.

The mystery is why He created anything at all, sure, but our existence and everything that surrounds us is a net positive, a free gift that we can always opt out of if we truly wish and bring it back to the zero that nonbelievers believe in. Nothingness is just a rope away after all, right? Every truly happy person out there, believer or not, sees it as the gift it is. God didn't have to make anything, yet He did, and my life despite its hardships, created by other people, has been a very enjoyable experience. Now, the promise of God (yes, we're talking about Abrahamic tenets here) is that of eternal life as long as you keep Him in mind and act right (pretty small price for some, seemingly impossible for others). In that context, sure, God is inherently, supremely benevolent (first you get a life for free that can honestly be great and you can always opt out of... although you can also suffer and 99% of it will be due to someone else, of course; but then you get another one that depends entirely on your own deeds and nothing else). But even without it, how could I reasonably blame God for other people's amorality when, as a moral person or at least one who tries to be one, I understand it's not that difficult not to cross some major lines? That's it's entirely in their hands and they just decided they didn't give a fuck? That's the immaturity I'm talking about. You might as well complain to your parents that they brought you into the world, lol, right? There's no cause and effect chain here between my childhood bully, his abuse and God's will, there's just one between (for instance) his childhood trauma, lack of information on his situation, lack of self control, lack of reflection and, finally but perhaps more importantly, lack of empathy and 'humanity'. It's not 'unfair' that God endowed us with free will, it's just the way He wanted us to be, for whatever reasons He had, and whether we like it or not (another function of free will, lol) it's what we're left with. And the world could be close to utopia if dads raised their kids, husbands didn't beat their wives, Casey Anthony didn't murder her daughter, of course! All we can do is invite people into morality and then reprimand/banish/incarcerate them if they poop on the invitation.

For the second part: you're thinking of God as a thing. Or even worse, as a man, maybe (Christians do this, probably due to their creed's Roman origins, lol). God is not here, God is outside. The Creator cannot be constrained in its creation! It would mean that the creation came before the Creator, lol, which is obvious nonsense. And so this creation is at least a level beneath Him, and in the same way that Stan Lee is not carbon on paper and text bubbles, God is not matter nor energy. I can tell you that much with logical certainty. Whether you wanna stop at "things exist, at times in shocking order, and compose a chain of cause and effect that takes us to the beginning of time and space, and that's all I can say with any degree of material certainty", or follow up it up with "and I believe that, because of this complex existence, a 'higher level entity' with more complexity than existence itself made it and sustains it", is up to you. I haven't really found any connecting arguments or whatever, which is why I respect an agnostic position if you reach this conclusion, but maybe there are not and they are not necessary (belief can only happen in the absence of material information, after all [Jesus' "belief in the unseen"]). Also, there's only so many things you can communicate through words!