Who Makes These Changes?

From Chapter 9: THE PICKAXE
Book VI, Verses 3682-3687
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Without saying, who is this disguised one? He is not visible unless he is celestial.  
You shot an arrow to the right, but have you seen your arrow go to the left?  
You charged at a deer for hunting, yet you made yourself the prey of a boar.  
You ran after profit for a gain, but before reaching it, the profit was imprisoned.  
You dug pits for others, only to find yourself fallen into them.  
When the cause made you unsuccessful, why do you not become suspicious of the cause?

Barks Interpretation

Who makes these changes?