Odysseus decides to kill Antinous first for several reasons that highlight both the character of Odysseus and the gravity of the situation he finds himself in after returning to Ithaca.
Firstly, Antinous is one of the most arrogant and aggressive suitors vying for Penelope’s hand. He openly disrespects Odysseus and his household, and his behavior is largely responsible for the troubles Odysseus’s family has faced during his absence. By killing Antinous first, Odysseus sends a strong message to the other suitors. It establishes his dominance and shows that he is reclaiming his rightful place as the king of Ithaca.
Secondly, Antinous is a leader among the suitors. Eliminating him specifically disrupts the overall morale and cohesion among the remaining suitors. This tactic allows Odysseus to instill fear, making it easier for him to deal with the rest of them, who are less powerful and influential.
Additionally, in the context of Greek society, killing the most prominent enemy first is a strategic military move. It symbolizes a restoration of order and justice for the wrongs done to him and his family. Thus, by targeting Antinous, Odysseus not only avenges his own grievances but also demonstrates the righteousness of his cause.