In previous posts, I drew attention to the problems presented to Islam by the contents of the Torah and the gospels, and the letters of Paul. Here, I want to build a similar argument from the works of early church fathers. I havepreviously pointed out that the Qur'an maintains that Jesus' own disciples were Muslims (Surah 3:52 and 61:14). This is a problem for Islam because the historical evidence is quite strong that Jesus' disciples approved Paul's message -- and Paul's message was most certainly not Islamic. But are there any other individuals in the early church, whose writings are still extant, and who had the stamp of apostolic approval? There most certainly are. Here, I will consider a few of these.