In these lines, we see that Antinous was rude to Odysseus because he was disguised as a beggar. Everyone, including the suitors, believe this to be a bad action. Odysseus does so as well, and in these lines he reproaches Antinous. He tells us that the beggar is only there out of hunger, and that many men have crossed oceans due to hunger. He also hopes that Antinous dies soon.
The best prediction of what will become of Antinous is that he will probably die first, as Odysseus is planning to kill all the suitors and he has now wished he was dead. The detail that supports this prediction is the statement "if there are Furies pent in the dark to avenge a poor man's wrong, then may Antinous meet his death before his wedding day!"