Iconoclasm has generally been motivated theologically by an Old Covenant interpretation of the Ten Commandments, which forbade the making and worshipping of "graven images" (Exodus 20:4, Deuteronomy 5:8, see also Biblical law in Christianity). The two periods of iconoclasm in the Byzantine Empire during the 8th and 9th centuries made use of this theological theme in discussions over the propriety of images of holy figures, including Christ, the Virgin (or Theotokos) and saints. It was a debate triggered by changes in Orthodox worship, which were themselves generated by the major social and political upheavals of the seventh century for the Byzantine Empire.