THIS is "not being moved"?

Psalm 66 tells us that the Lord "keeps our soul among the living and does not allow our feet to be moved."

Then it goes on to tell us that He has tested us.  He has refined us.  (Now, that may sound nice at first glance.  But it requires an awful lot of fire.  And burning up.  You know?)    He brought us into the net.  He laid affliction on our backs.  He caused men to ride over our heads.  We went through fire and water.

And THIS is what it looks like when He keeps our soul among the living?  [shudder]

And yet, after all this,
THROUGH all this,
no matter how we fall,
no matter how we are attacked,
He brings us out to rich fulfillment.
And He has not turned His mercy from me.