Who say o your offense is rank it smells to heaven?

The line "O, your offense is rank; it smells to heaven" is spoken by King Claudius in Shakespeare's play Hamlet. This line reflects Claudius's guilt and recognition of his sinful actions, particularly his murder of his brother, King Hamlet. It captures the theme of sin and moral corruption that permeates the play. Claudius's awareness of his wrongdoing contrasts with Hamlet's struggle to take action against him.