Of course there are people powerful enough. Hell, I can change the ten commandments if I wanted to. All that matters is if the general religious population is willing to follow you and whatever messed up ideas you have for them. If you want to eat cheese everyday because that's one of the ten commandments you created, then so be it.
Spiritually, and seriously however, no. Unless God himself decides to step off his throne and descend from the heavens with a Quill, there is no one on this earth, and I mean NO ONE, who has the right to change His word.