Abstract
The concept of tawd (unity of God) is a central issue in Kalm model of discussion and the structure of John Damascene's (d. 750) De Fide Orthodoxa. Pines suggested that it may indicate the profound impact of Christian theology on Mum. Ulrich Rudolph adds two important pieces of evidence to the discussion: He analyzes Abtur al-Samarqandb al-Tawd and the Jacobite Moses bar-Kepha's (d. 903) introduction to his Hexaemeron, and argues that the structural and conceptual affinity between them actually indicates an opposite direction of influence than the one suggested by Pines. According to Rudolph, the similarity of the two treatises shows they were written as an imitation of an older Mub al-Tawd, and second by suggesting an alternative assumption, which will strengthen Pines's theory regarding the development of the Kaltur and bar-Kepha, together with some fragments of earlier Jewish and Christian commentaries on Genesis, will rise the possibility that this model of discussion existed first in the Christian exegetical treatises assigned to Genesis and had already developed before it appeared in the Kalām works