"To bed, to bed! there’s knocking at the gate: come, come, come, come, give me your hand. What’s done cannot be undone.—To bed, to bed, to bed!".
It is spoken by in Act 5, Scene 1 (the famous "sleepwalking scene") as she relives the guilt of the murders she helped commit. Context of the Text come_give_me_your_hand
This specific line refers back to the night of King Duncan's murder, specifically the moment when a knock at the door forced the couple to hurry to their chamber to avoid suspicion. Draft of the Full Speech Excerpt "To bed, to bed
The repetition of "come" and "to bed" emphasizes her frantic, cyclical thoughts, which are a stark contrast to her earlier command of language. It is spoken by in Act 5, Scene
For your reference, here is the immediate draft of that section from Shakespeare's Macbeth :
This line highlights Lady Macbeth's transition from a cold, calculating figure to one "unhinged" by trauma and guilt.