Read it through once

DUKE. More of him anon. There is written in your brow, Provost, honesty and constancy; if I read it not truly, my ancient skill beguiles me. But in the boldness of my cunning I will lay myself in hazard. Claudio, whom here you have warrant to execute, is no greater forfeit to the law than Angelo who hath sentenced him. To make you understand this in a manifested effect, I crave but four days’ respite, for the which you are to do me both a present and a dangerous courtesy.