Ephesians 4:30 “And grieve not the Holy Spirit of God, whereby ye are sealed unto the day of redemption.”
The death of a child is like no other death. It is a never healing pain. It is a loss of part of yourself. It causes immense personal distress. I have personally suffered a miscarriage. I have sat with friends who have lost their children and seen the despair and pain written across their faces. Our children are not supposed to die before us. We grieve at the thought of being separated from them, not hearing their voices, seeing their faces, never seeing their full potential fulfilled.
As parents, we grieve, get angry when we see our children heading down a path of self-destruction. We many times stand face to face with a defiant, sulky, self-defiant, self-righteous, self-absorbed child. Yet, many of us stand, as that child, in the face of God. And you know what? Our Father grieves.

Our God, our Father, gives us the Holy Spirit as a guide. Still we disregard the promptings as a teenager sneaking out of the house for a night of mischief. We get angry at God because we look at the rules and start manifesting feelings of judgment. The same reasons I would get angry at my parents when I was young. Now as a parent myself, I understand. My parents loved me.
Our Heavenly Father grieves as we disregard His guidance. On judgment day, I can visualize God with tears in His eyes as He has to turn away from His children, His creations, who have chosen to be eternally separated from Him. I imagine it like being at the side of a hospital bed as you watch your child take his last breath.
God grieves.