“... 22-30 In Mark, this passage is a controversy-dialogue occasioned by the exorcisms of Jesus in general, not by a particular case. The observation that the author of Matthew combined Mark’s version of this passage with another that Luke follows exclusively indicates the existence of a parallel passage in Q. [...] The occurrence of such a saying in Q and its wording are uncertain (Robinson et al., Critical Edition of Q, 234–35; cf. lxxxii–lxxxiii for an explanation of the sigla). For a detailed comparison of the three accounts and a reconstruction of the version of Q, see Fleddermann, Mark and Q, 41–73. His argument that Mark is dependent on Q (p. 61), however, is not compelling; the two documents may be dependent on a common source, written or oral. He also discusses the parallel in Gos. Thom. 35, which is more similar to Mark than the versions in Matt 12:29 and Luke 11:21-22; the version in Thomas may be dependent on Mark as Fleddermann argues; on the version in Gos. Thom., see also Robinson et al., Critical Edition of Q, 234. ...”