How blunt are all the arrows of thy quiver in comparison with those of guilt.

For thine arrows stick fast in me, and thy hand presseth me sore.

Its visits, like those of angels, short, and far between.

Of joys departed, not to return, how painful the remembrance.

The biggest problem is that Duncan didn't come across as someone who was convinced of his own guilt. If he can't figure out [that he is guilty] how can you impute liability to the entire partnership?

Therefore shalt thou make them turn their back, when thou shalt make ready thine arrows upon thy strings against the face of them.