‘Besides, this Duncan hath borne his faculties so meek, hath been so clear in his great office, that his virtues will plea like Angels’ Quote that praises Duncan.

Means Duncan was a good King that the Angels will sing for him in heaven.

‘Commends th’ingredients of our poisoned chalice’ Quote that shows Macbeth committing a bad deed.

OUR is the keyword it shows it belongs to Macbeth and possibly Lady Macbeth. Poisoned is a bad thing and chalice is referring to his deed or sin. So poisoned chalice mean bad deed or bad sin.