Amos 8:10

Then Yahweh would turn their festivals into funerals and their melodious singing into mourning. The people would wear sackcloth and shave their heads as signs of their grief. Mourning would come because judgment had come. It would be as sad a time as the death of an only son. The death of an only son meant the extinguishing of hope for the future and the losing of provision for one’s old age. The end of that day would be bitter indeed.