Rhetorical questiona and metaphor illustrating that he still distrusts the witches motives even after a prophecy becomes true. Contrasts to macbeth who is misguided thinking the witches have his best interest
"In heavens the candles are all out" Banquo
Banquo starts to realise strange supernatural things are happenning and the hyperbole illustrastes this. This foreshadows the act of regicide which was about to be committed, which is going against God
"In the great hand of God... I fight of treasonous mallice " Banquo
Banquo is completely outraged. Massive contrast to macbeth who did the killing, shows the corrupting influence of ambition. Horrified divine rights of king has been gone against.
" I fear thou plays'dst most foully for it"- Banquo
Banquo starts connecting the dots are the prophecies and macbeth being king. Banquo echoes what the witches say "fair is foul and foul is fair" through his alliteration. His alliteration also shows his doubt wondering if Macbeth has something to do with it. Banquo is shocked at the possibility macbeth has gained enough ambition to make him kill the king. Appearence vs reality even though macbeth is acting sad and LM fainted. Violation of great chain of being
Neither beg nor fear your favours or your hate
Banquo is skeptical and weary of the witches after hearing the witches. compared to macbeth being startled by the prophecies. Even though both men are in the same category of the royal hierarchy only macbeth takes matters into his won hands and embarks on his bloody campaign of violence. Banquo doesn't succumb to the prophecies as he doesn't have the hamartia.
"take my sword" "cursed thoughts"
reveals later to macbeth that he was having dreams about the weird sisters. So it coukd imply that banquo didnt trust his ability restrain himself from following his ambition an the apparitions of the witches. Which led to him giving his sword to his son
I fear thou play'sdt most foully for it
After murder of Duncan Banquo suspect macbeth did it but doesnt sound alarm like macduff did. In act 2 scene 1 Macbeth tells him to "cleave to my cnsent" meaning stay loyal to me and it will pay off for him later.
wisdom that doth guide his valour
Macbeth is acknowledging the thing he fears most about banquo is his good and wise nature. Macbeth represents evil and banquo representing good and they cannot exsist together.