Final answer:
Macbeth ironically wishes for Banquo's presence at the feast, despite having arranged for his murder because of the witches' prophecy about Banquo's heirs becoming kings.
Step-by-step explanation:
At the feast in Shakespeare's Macbeth, Macbeth says he wishes Banquo were present. This is ironic because Macbeth has arranged for Banquo's murder due to the witches' prophecy that Banquo's descendants will become kings. Although Macbeth acts as if he wishes for Banquo's company, in reality, he fears Banquo's lineage and the threat it poses to his own power. The irony lies in Macbeth mourning the absence of someone whom he himself has made sure cannot be present.