Does this mean that anybody can do anything to anybody, if they think they're right--if they think of themself as "the ruler"--and God will sort it out later? Anybody could take that quote and use it to justify anything. I don't think God wants us to leave it to Him to sort it out later. I think he wants us to take the responsibility for Justice here and now--not just the responsibility for survival. If it was only about survival, God wouldn't have bothered to give us the Word. But this is theology and the discussion goes on for millenia, literally, and in the end you and I are going to see what we need to see in the text.
As President Bush says, "... and we'll bring 'em to justice!".