The schisms that brought about the many sects resulted from political and doctrinal disagreements. The doctrine most commonly at issue was the nature of Christ. In 431, the Nestorians were separated from the main body of the Church because of their belief in the dual character of Christ, i.e., that he had two distinct but inseparable ""qnoma"" (ܩܢܘܡܐ, close in meaning to, but not exactly the same as, hypostasis), the human Jesus and the divine Logos. Therefore, according to Nestorian belief, Mary was not the mother of God but only of the man Jesus. The Council of Chalcedon, representing the mainstream of Christianity, in 451 confirmed the dual nature of Christ in one person; Mary was therefore the mother of a single person, mystically and simultaneously both human and divine. The Miaphysites taught that the Logos took on an instance of humanity as His own in one nature. They were the precursors of the present-day Syrian and Armenian Orthodox churches.