From Poem to Cliche

I thought it a beautiful expression when first I heard it. It was the night of the day when my father died.  I was lying in bed, weeping.  

"Tsarstvo yemu nyebyennoye" -- "May he be in the heavenly kingdom."

Now rote and ritual on Telegram, every time another young Russian mobik comes home, or rather parts of him come home, in a black zippered bag.