Why is Paul’s response at the end of the story an example of a verbal irony

Irony is a literary technique in which what is written or stated is different from or the opposite of what is expected. There are several types of irony. For example, verbal irony is when a person says the opposite of what they mean, often to sarcastic effect, such as when a customer says "Good job," to a waiter who has dropped his tray

Explanation:

it ends with a marriage, but also with prospero giving up his power.

the tempest is a play written by william shakespeare between 1610-1611, it narrates the story of prospero a magician that sets a storm to wreck a ship, this sets the story to kill the king of naples. while it is a romantic style play, it isn´t traditional because of the ending, it end with the marriage and the magician giving up his powers.