The Encyclopedia Americana says that when delivering his revelations, Mohammed spoke in a very moving style--in a joyful manner, with great power and lyricism. The fact that his mode of speech was not ordinary is one reason why it is so hard to do justice to the original in translation.
《大美百科全書》中寫道，先知傳講真主的啟示、也就是古蘭經時，和他平常講話的語氣不同，這時他近乎一種欣喜出神的狀態，這時他的語言有力、精闢、押韻而富節奏，非常令人感動，這也是古蘭經難譯的主要原因。