Altogether, Barnabas is roughly equal in length to the four canonical Gospels of Matthew, Mark, Luke and John, it being a biography of Jesus Christ. It is noted for attributing Jesus with a prediction of the Prophet Muhammad, whom he calls 'Ahmad'. Jesus foresees but preemptively rejects his own deification, which is also consistent with the Islamic account of his life. Jesus also makes a direct plea to Barnabas shortly before his crucifixion; asking that he write the Gospel and spread the word of Muhammad's coming.