Thanks on the language thing.
Unless I'm mistaken, you seem to be attributing the humility assessment to my roommate and myself. Often God speaks by giving understanding but we are very much just the messengers on this one. If you disagree, then you will have to take it up with God. I will say, though, that God's standard of humility is much higher than we can often recognize on our own. Job wasn't exactly an arrogant jerk when God decided to give him a thorough lesson on the subject, in fact it was an honor because Job had so much right.
Why does a child have to suffer? Oh boy, there is a lot to unpack there. I just hope you can take it. I know from what God has taught my church, which came mostly through a tested elder Prophet over time, but there is a lot to it. At least my primary gift is teaching (though it is getting late and my brain isn't as sharp).
First off, throw out the doctrines of God being omnipotent and omniscient. I had to doublecheck this one for myself, but these are based in tradition and black-and-white thinking rather than the Bible. Why we Christians get so taken in by fancy sounding language (myself included apparently), I don't fully understand. Anyway, is God very, very, very powerful? Yes, indeed. Is his power limitless and infinite? No. Just like Bill Gates has the capacity to help out many but not all, God is very capable but He isn't able to fix everybody's life, at least not instantly or all at once.
Part of this too is that miracles aren't magic. The limits of spiritual reality go far beyond what you and I know, but even God is limited by the 'physics' of his reality. For example, it literally requires faith for a miracle to happen. People who expect healers to go around healing everyone in the hospital have no idea how ridiculous the suggestion is; I suspect it would even kill the healers! Righteousness is another spiritual currency that God spends as He can. On that note I'm suddenly wondering if it wasn't a coincidence that a verse I encountered today stuck out at me: "Even if these three men—Noah, Daniel and Job—were in it, they could save only themselves by their righteousness, declares the Sovereign Lord" (Ezekiel 14:14).
As for omniscience, my looking for myself into if this was really true of God led me to a conclusion of "Well sort of, but not the way most people mean it." The Bible demonstrates God checking in on things. (Sorry, I can't think of a verse to support this at the moment.) The only alleged pro-omniscience verse I could find that said something about God knowing all was in a very limited context like our emotions or thoughts or something like that. Yes God knows the number of hairs on our heads and when the birds drop dead, but to extrapolate those into God knowing absolutely everything and every possibility is quite a leap.
I suppose the omniscience issue isn't as connected to your question, but it was related to the doctrine of omnipotence, which is.
Let's go back now to the Bill Gates metaphor. Let's say Bill wants to help someone out with his financial power. Who does he help first? Most likely his friends and family, or those doing work he agrees with. God is not that different in this. The Bible says in James 5:16, "The effective prayer of a righteous man can accomplish much." And I know I have heard of at least one other verse with this same message. The one I quoted above in Ezekiel may also support this. Anyway, God doesn't answer everyone equally, but listens first to those who are His or who are essential to complete his purpose. After that he hands out what he has left to some who ask as He is able.
This is seen in the story of the Canaanite woman in Matthew 15 who asked Jesus to help with her daughter that was possessed by an unclean spirit. Jesus initially denied her request, saying in verse 24, “I was sent only to the lost sheep of Israel" and in verse 26, "It is not right to take the children’s bread and toss it to the dogs." But after she compares her and her daughter to the dogs eating the crumbs under the table, he is impressed with her answer and relents.
There is also the differing accounts of Peter and John's deaths as suggested in the end of John, and seen elsewhere. Peter even got a little indignant at Jesus for suggesting that John wouldn't die like Peter, but we know that John had work to do in recording the Book of Revelation. Why God allows a particular little child to suffer and not get delivered while another is healed can be like these, not as essential as the deliverance of another person, or because their parent isn't a righteous person when they ask for help.
That last part is a little hard to take, I must say, but in order for things to work and for Him to develop people as He needs to, God is very generous with authority. And for that authority to be real, God has to not save everyone from their bad mistakes. Or their children.
Also realize that our view of suffering isn't necessarily the same as God's. I'm not saying intractable pain is a good thing - Jesus did pray for another way than the cross if there was one, but God doesn't give either pain or pleasure as much value as we often do. For one thing, God created BOTH pain and pleasure for good purpose. Have you ever heard of the children born without a sense of pain? They don't live long. Pain is an alarm that is vitally important for life. Yes, it can become a negative instead of a positive when it gets out of place, but pain and suffering aren't bad or evil in and of themselves.
These are lessons about pain God taught me at a particular point, by the way. He even sent a bee to give me a mild sting. (For which I was a bit annoyed with Him.
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Oh, also, God also sometimes uses our love for others to teach us. Therefore He has been known to allow what we see as bad outcomes in our children. I don't know the extent of this, and I doubt it would be inclined to be just be horrific suffering of little children, but God may allow some suffering by children to reach the hearts of the parents.
Also realize that there are things God doesn't like either but have to happen. Noah's ark would be one likely example.
Anyway, I know I just covered a lot. I hope you got what you need because I'm beat and gonna go to bed here soon.
Have a good one.