And there are substantial arguments that even if Jesus was speaking Aramaic, there are words in Aramaic that would have retained the distinction between Peter and the Rock anyway. So the retreat to Aramaic buys the “I am of Peter” faction absolutely nothing. For a great study of the issue, see Chrys Caragounis’ book, “Peter and the Rock.”
Which is why we are better off sticking with the words we have been given, inspired in the Greek by the Holy Spirit. Speculation without a solid foundation is a fast track to serious error.
Peace,
SR
Bears repeating.