en_tn/act/25/11.md

Though if I have done wrong ... I do not refuse to die

Paul does not believe that he has done wrong, but he shows that he will submit to the law and will not refuse to be punished if he really has done wrong.

if I have done what is worthy of death

"if I have done some wrong that deserves the death penalty"

if their accusations are nothing

"if the charges against me are not true"

no one may hand me over to them

Possible meanings are 1) Festus does not have the legal authority to hand Paul over to these false accusers or 2) the governor should not give in to the request of the Jews.

I appeal to Caesar

"I ask to go before Caesar so he can judge me"