We are so small and mortal that how can we even try to understand the workings of God? Why did He let that child die while their friends live on? Why did that murderer get away scot-free? Why are millions around the world dying and suffering? I can't answer that. No one but God can. But I  can offer hope. That if you put your trust in an all knowing all powerful God, and you realize that in the end, although it may seem horrible, anguishing now, He has a plan, He has a greater picture in mind. Like the little boy who can't understand why his daddy will let him touch the window on the door but not the window on stove, so we are sometimes. Clueless as to God's reasoning and insisting that we know best when we can't see the whole picture; can't see the outcome.
If we keep looking around at the world, at the sin, at the problems that Satan causes, and God permits for a purpose, we take our eyes off of God and quickly sink beneath the waves as Peter did in (Matt.  14:22-33). Maybe if we remember that we were created to glorify our maker, we would look at things differently. That our purpose is to please Him. To be molded into His image. Maybe He took that father home, removed your family because He wanted you to realize that He is all you really need. Or maybe He removed your job so that He could test how loyal you are to Him, get you to realize how much more important that job had become. All of those millions of children dying, are going home to be with Him. Maybe He took that child, because that would be the only time you would think about Him or yearn for comfort. I don't know.  God has all in His mighty hands. He does as He sees best. "For I know the thoughts that I think toward you, saith the LORD, thoughts of peace, and not of evil..." (Jer. 29:11) I don't want to judge anyone. I don't know what you're going through. I just want to let you know that although we only see one side of our circumstances, one day, it will all be clear, and if we persevere to the end, we shall come forth as gold through the fire. Easy to say, harder to go through. I don't know why He does what He does, but for each individual, He has a plan and purpose. One day, we will know.