 This division of the community echoes a similar division in Manichaeism.The teaching of the "Book of Steps" has been described as Messalian by some scholars (including Kmoskó the editor of the critical Syriac edition).However, Brock has demonstrated that the "Book of Steps" emphasis on the structure of the "visible church" (particularly strong in discourse 12) shows that its doctrine is quite removed from Messalianism.