The Immutability of God 

No one knows who wrote this psalm

It has variously been attributed to Daniel to Jeremiah to Nehemiah
or to some of the other prophets during the time of the captivity

The psalmist is afflicted / he’s pouring out his lament before God

In the first 11 verses / he tells us that he’s been brutally afflicted:

v.3 / his days pass away like smoke / his bones burn like a furnace

v.4 / his heart is struck down / it has withered;

   v.4 / he’s not eating        

v.5 / his bones cling to his flesh

v.8 / his enemies taunt him and he is cursed 

v.9 / he eats ashes like bread

v.10 / he feels like God has taken him up and thrown him down