en_tn/2ki/08/13.md

Who is your servant, that he should to this great thing?

Hazael is talking about himself. AT: "Who am I, that I would have the power to do such things?" or "I could never do such things!" (See: rc://en/ta/man/translate/figs-rquestion)

He is only a dog

Hazael is talking about himself. AT: "I am like a lowly animal." (See: rc://en/ta/man/translate/figs-metaphor)

came to his master

AT: "went back to Benhadad,"

He answered, "He told me that you would certainly recover"

AT: "Hazael replied, 'Elisha told me that you would not die from this illness'."

so that he died

Hazael put a wet blanket over king Benhadad's face. Benhadad was unable to breathe through it, and so he died. (See: rc://en/ta/man/translate/figs-explicitinfo)

Then Hazael became king in his place

As Elisha had prophesied, Hazael became the king of Aram after Benhadad was dead.