they kill the suitors
Athena
Eurymachus leads them all in their decision to ambush Telemachus.
Antinous suggests to have the suitors killed. Since Telemachus is the only suitor that keeps Antinous from Penelope, if Antinous gets rid of Telemachus and the rest of the suitors, he will be the only one left in the house and Penelope will be forced to marry Antinous.
Telemachus is a barrier between them and Penelope. Telemachus insults the suitors in the first two books of the Odyssey, and threatens to eventually kill them. If Telemachus is dead, then there will be no man in the house. Penelope will be forced to marry. Further, it is easier to kill him before he is full grown.
they kill the suitors
Yes. Telemachus fights his mother's suitors in both deed and combat.
the excuse that telemachus gives to the suitors is that he will clean the weapons
Athena
Eurymachus leads them all in their decision to ambush Telemachus.
Telemachus catches the suitors raiding the storeroom in his household.
Odysseus tells Telemachus to hid the weapons so that the suitors can't use them. Telemachus has to say that the weapons are getting "smoke damaged" and he is afraid that the suitors will start hurting themselves with them if they have too much to drink.
Odysseus persuades Telemachus by revealing his true identity, proving he is still alive and capable of taking down the suitors. He reassures Telemachus that they have the gods on their side and that together, father and son, they can overcome the suitors' tyranny and restore justice to their home.
Antinous suggests to have the suitors killed. Since Telemachus is the only suitor that keeps Antinous from Penelope, if Antinous gets rid of Telemachus and the rest of the suitors, he will be the only one left in the house and Penelope will be forced to marry Antinous.
Multiple eagles fly overhead when Telemachus threatens to punish the suitors; this meant that the god Zeus was agreeing with him.
Odysseus tells Telemachus to remain calm and not start a fight with the suitors. He advises Telemachus to observe their behavior and wait for the right moment to take action. Odysseus urges his son to trust in him and the plan they have in place to deal with the suitors.
Odysseus and Telemachus plan to disguise themselves and then take the suitors by surprise, attacking them and seeking vengeance for their disrespect and behavior in their home. They aim to execute the suitors and restore order in their household.