Communication

The limit on communication cannot be the best means to expand communication. Yet the ego would have you believe that it is.

Although the attempt to keep the limitations that a body would impose is obvious here, it is perhaps not so apparent why holding grievances is an attack on God's plan for salvation.

But let us consider the kinds of things you are apt to hold grievances for.

Are they not always associated with something a body does?

A person says something you do not like. He does something that displeases you. He "betrays" his hostile thoughts in his behavior.

You are not dealing here with what the person is. On the contrary, you are exclusively concerned with what he does in a body.
 
You are doing more than failing to help in freeing him from the body's limitations. You are actively trying to hold him to it by confusing it with him, and judging them as one.
 
Herein is God attacked, for if His Son is only a body, so must He be as well. A creator wholly unlike his creation is inconceivable.