what are the implications of the following words in the relation to the evil deeds that has just occured?,''methought i heard a voice cry,sleep no more:macbeth does murder sleep,''

Macbeth says that his conscience will never be the same. By killing the king, he has offended God as well. Macbeth claims that his mind will never be at peace again. He thinks he will lose the soothing properties of sleep because of the guilt and sin he will carry from now on.