What does Act I, Scene 2, tell us about Macbeth?

This particular scene shows us what other characters think about Macbeth at the beginning of the story. The wounded captain calls him "brave Macbeth" and details Macbeth's courageous, though brutal, behavior during the two battles in which he fights (line 18). He is relentless and swift, like "Valor's minion," or the chosen darling of valor or courage (line 21). Further, when Duncan hears the captain's report, he cries, "O valiant cousin, worthy gentleman!" This tells us Macbeth is actually related to the king and that the king thinks of him incredibly highly (line 26). In fact, Duncan thinks so well of Macbeth that he decides to give him an additional title, the Thane of Cawdor, and he tells the same men to execute the old Thane of Cawdor for treason and inform Macbeth of his new title. This scene makes it clear that everyone thinks highly of Macbeth, he is beloved by his king, and he seems to be quite loyal to the crown.