However, by act 5 scene 1 this seems to have deteriorated as she speaks in prose, which is choppy and abrupt, even descending to doggerel with the rhyme of “Fife” and “wife”.
Interestingly, perhaps Shakespeare’s writing is reflecting what it means to break down, even her language is breaking down because the guilt of sin is removing her ability to communicate, think and compose herself, thus removing any traces of her identity.
This is particularly effective, as it could foreshadow the demise yet to come, as if the sin is spreading, becoming an “ocean”, it implies that the guilt Macbeth is feeling because he cannot be cleansed, is going to become much larger, perhaps large enough to fill an “ocean”, to fill and cover the plot of the play from now on, just as the ocean does the earth.
In the Medieval era, the colour red, not only synonymous with blood, announced hatred, anger, aggression, and war.
In this case, Shakespeare’s messages here may be of his strong opinions on the consequences and questions of morality surrounding regicide and the chain of being, as for a king to be killed throughout the Shakespearean era, was the worst sin to be committed because the king was next in line to God.
Perhaps Shakespeare’s messages are that if a person sacrifices themselves to committing regicide, the consequences will be fatal, and tragic, alike Lady Macbeth’s, and this is after the unimaginable contempt of losing social status and natural function in the mind.
Therefore, by showing that not even water, the purest of all substances can wash away these emotions, implies that they are finite and everlasting.
It is also incredibly interesting that Shakespeare has chosen to juxtapose the two solutions: sea and blood here, as water is a holy substance, representing God’s word in the bible.
In this way, Shakespeare could be portraying that even the bible and God’s word is not powerful enough to unravel and neutralise the sin he has committed, assassinating the most divine figure in human life, the King, and that God’s word does not have any authority within the sinful complexity of Macbeth’s vaulting guilt.
Para three - In addition to this, Macbeth is disturbing nature by replacing water and “Neptune’s ocean” with red, therefore with his blood, therefore with a heightened and erratic state of danger because his guilt leads him to feel this way.