Question: what is the purpose of act 3 scene 6 in macbeth?
Answer: Its function is twofold: first to convince the audience of Lennox's real thoughts about Macbeth. Even though Lennox appears loyal to Macbeth at the end of Act IV, Scene 1, here he divulges his concerns in lines such as "Men must not walk too late" and, more directly, the phrase "the tyrant's feast."