'Advantage' in the Bible

if after the manner of a man with wild beasts I fought in Ephesus, what the advantage to me if the dead do not rise? let us eat and drink, for to-morrow we die!

any one of those whom I have sent unto you -- by him did I take advantage of you?

I entreated Titus, and did send with him the brother; did Titus take advantage of you? in the same spirit did we not walk? -- did we not in the same steps?