There is not one verse in God's Word that even hints we can know why in the Now.
We are not advancing because we know His reasons. We advance by faith because He has asked us to trust Him.
The death of a child is a stunning loss. Serious illness and chronic pain can only be understood by those who goes through it. There are no words to describe public humiliation and unfair loss or accusation.
But, we have a Lord. That means we come under the One who rules. We come in submission to Him who named us and counts the hairs on our head.
We come to the One who collects our tears in a bottle.
The Soldier of The Cross must come to the Lord and declare he or she will embrace the death of the flesh.
That means giving up the right to know why.
Wanting to know why is the same as saying to the Lord, "I need to know your reason to see if I approve of your decision and I am challenging your sovereignty. . ." and that is not a position of faith.
The bottom line is always the same thing - can He be trusted?
Of course He can. He is the Prince of Peace. The Indwelling Holy Spirit can usher in supernatural Peace even in times of desperate grief, physical pain and stunning unfairness.
Oh, Soldier. Life is short. It is eternity that never ends, and it is in eternity that we will be privileged to see it all and know it all.
Until then, tell Him you will rest in Him and take Him at His Word. A daily exercise.
The Christian Soldier must learn how to live, and it can't be done without unbearable challenges. If it could all be humanly borne, there would be no need for faith.
Tell Him aloud. Right now.