Is the expression "I will refuse nothing that you ask of me" equivalent to saying "I will do everything that you ask of me" in a strict sense?
English Language & Usage Stack Exchange is a question and answer site for linguists, etymologists, and serious English language enthusiasts. It only takes a minute to sign up.Sign up to join this community
There is a tiny difference.
The first says the speaker will not "refuse", but does not explicitly state that he will "do" what is asked. This gives a tiny bit of wiggle room to not fulfill a request which is "impossible".
But that would be "lawyer's" interpretation, not the "man-on-the-street" one, and the "man-on-the-street" reading would be that the first is the same as the second only more dramatic.