layers of communities. The Gospel of Thomas was a Syriac text written in the last quarter of the second century by a careful editor who arranged his material largely on the basis of catchword connections. As far as his sources, Thomas drew primarily on Tatian’s Diatessaron, but also undoubtedly drew on his memory of a number of oral and written traditions. It cannot be ruled out that Thomas preserves authentic sayings of Jesus; it is simply that, given a span of 140-plus years, this would be extremely