What was prophesied over the life of banquo? macbeth? act 1 scene 3

Ross arrives and announces that Macbeth is to be the new Thane of Cawdor, thus confirming the first prophecy of the Witches. Banquo and Macbeth are struck dumb for the second time, but now Shakespeare contrasts their responses. Banquo is aware of the possibility that the prophecies may have been the work of supernatural dark forces, as exemplified in his lines "What? Can the Devil speak true?" (108) and "oftentimes, to win us to our harm, / The instruments of Darkness tell us truths . . . — (only) to betray us" (123-125). Macbeth is more ambiguous. His speech is full of what will now become his trademark — questioning, doubting, weighing up, and seeking to justify: "This supernatural soliciting / Cannot be ill; cannot be good" (130-131).