Wow. I'm so sorry for your loss.
It is so very sad when a person dies, when we don't think they should. Please let yourself grieve. It's healthy to release emotion.
I pray Heavenly Father that this family be surrounded by Your divine love and healing. Lord Jesus it's so sad when we lose a loved one to death, I just pray Lord that You would fill this family with your preace, especially the little 4 year old boy. Father God, not a lot of words can be said during a time of grief, I just pray that Your presence be known to this family. In the precious name of Jesus Christ, AMEN.