sentences:  The Iconoclasm (730–787 and 813–843) was a movement within the Byzantine church to establish that the Christian culture of portraits (see icon) of the family of Christ and subsequent Christians and biblical scenes were not of a Christian origin and therefore heretical.The group destroyed much of the Christian churches' art history, until it was later defined as heretical itself under the Seventh Ecumenical council.The iconoclasts considered the tradition of icons as contrary to the ban on 'graven images', interpretated in a narrow sense as 'engraved or carved'.