In Act 5, Scene 1, the doctor visits Lady Macbeth. The gentlewoman is waiting for the doctor. The gentlewoman reports that Lady Macbeth has been sleep walking. Lady Macbeth tries to wash bloodstains from her hands while sleep walking:
Out, damned spot! Out, I say! One; two; why, then it is
time to do it. Hell is murky! For shame, my lord, for shame! A soldier,
and afeard? What need we fear who knows it, when none can call
our power to account? Yet who would have thought the old man to
have had so much blood in him?
After witnessing this scene, the doctor reports to the gentlewoman that he cannot medically help Lady Macbeth. He claims that her condition needs divine help:
She needs the divine more than she needs the physician.
God, God, forgive us all! Look after her.
Take everything from her that she might use to harm herself,
And still keep your eyes on her. So, good-night.
She has stupefied my mind, and amazed my sight.
I think, but dare not speak.
Clearly, the doctor is puzzled by Lady Macbeth's condition. He declares that he is amazed by what he sees. He does not know how to help her medically. He decides to keep silent about what he thinks is wrong with Lady Macbeth. All that he knows is that it is not a medical condition. He claims that Lady Macbeth needs a spiritual healing.