The first split in Christianity came at the Council of Chalcedon. Here the difficulty was over the definition of the nature of Christ. His nature was defined as fully divine and fully human, without confusion or mixture. If, as is often suggested, the splits were based on biblical interpretation, where in the Bible is this fully human and divine stuff discussed? If it isn't there how can we maintain that different biblical interpretations caused the splits in Christianity?

Please see the excellent answers and sources that were already posted by GuruBlue and Bobpursley.

http://www.jiskha.com/display.cgi?id=1197992238