I agree with the first and third sentence. The part that I marked is what bothers me. God is presented as being loving and just. But giving Satan permission to f*** with someone seems to be evil and not loving. I'm really searching for how this is worked out. Especially in the case of children.
Again, let me preface with I don't know.
My own belief, and what the Bible seems to support, is that mankind was once given perfection. We chose to know what exists beyond the matrix of perfection, because mankind is naturally curious. Thus, we are now immersed in a world of polarity or binary opposites, such as hate/love, life/death, health/sickness, truth/falsehoods, etc. To me, that is what the story of the Garden of Eden represents. We chose to live in a f***d up world.
In terms of the story of Job, what is often missed in that story is God was breaking Job of pride, as God teaches him that he wasn't there when God created the known universe so Job had no business trying to conclude why anything happens that does. It just does, oftentimes for reasons we will never understand.
In short, I don't know why some children die. What I do know is that the well-intended people who like to tell grieving parents that "God must have needed another little angel in heaven" are full of shit. And are not to be listened to.
With that said, I am of the belief that those children who have died are indeed immersed in a higher level of consciousness that is free of sickness, pain, and suffering, and are therefore in the presence of Almighty God for all of eternity. When I consider my own mortal life on Earth is less than a blink of the eye in the grand scheme of things, it puts a lot in perspective for me.