When I was a kid, the catholics said they were the real church, because they all said mass in Latin, so that proved the oneness. You don't need the language to know this is the same worship we do in English, or in Hebrew, or Spanish, or Creole, which I have been involved in worship in. The emotion in the music is the same. Just compare it to the Moslem music if you don't think so. We are indeed all one in Jesus.