Shortly after his arrival in Constantinople, Nestorius became involved in the disputes of two theological factions, which differed in their Christology. Nestorius tried to find a middle ground between those that emphasized the fact that in Christ, God had been born as a man and insisted on calling the Virgin Mary "Theotokos" (, "God-bearer") and those that rejected that title because God, as an eternal being, could not have been born. Nestorius suggested the title "Christotokos" ("Χριστοτόκος", "Christ-bearer"), but he did not find acceptance on either side.