In two large and somewhat technical books, Memory and Manuscript and Tradition and Transmission in Early Christianity, Professor Gerhardsson put forward some controversial theories about how the gospel material came down to us, arguing that modern critics had not paid enough attention to the nature of oral tradition in the ancient world. This short study presents his views clearly and simply, as they have been tested and refined over the past fifteen years since they were first put forward. The reader will find not only a straightforward presentation of one way in which the writing of our gospels may be explained, but also a series of penetrating questions which will prompt further thought, whether from radicals or conservatives. Here is strong argument for the reliability of the gospels coupled with an acknowledgment of the degree of our ignorance and a stimulus to further questioning.