They can perform some simple, supportive actions, but if these acts are performed selflessly and wholeheartedly, they will no longer be mechanical acts. Such a person may not understand what needs to be done, but he is willing to cleave to you. The minute he does, he begins to receive everything that you have and grows! Suddenly, inside of this small desire the immense spiritual desires, the soul, become revealed.
In the spiritual world, each tiny cell, by connecting to the body, receives everything that the body has; it acquires all of its desires and is aware of everything that happens there.
From the 4th part of the Daily Kabbalah Lesson 12/12/10, “A Handmaid that is Heir to Her Mistress”