The following line in this excerpt from Jonathan Swift's "A Modest Proposal" uses the rhetorical device of irony:
I have no children, by which "I can propose to get a single penny; the youngest being nine years old, and my wife past child-bearing".
Paris thinks that Romeo has come to the tomb to do criminal/ bad things. Paris's perspective on Romeo is that he is a murderer since he killed Tybalt, and he believes that Romeo has come to do another negative act of his behavior.