Gugi is right that this is a mess... Christology was a raging debate as early as the second century- and certain beliefs very contrary to modern Nicean orthodoxy were held in large parts of the Church...

Good things to look up on your next library visit would be Origen of Alexandria, Arius, Justin Martyr, and anything you can find related to the search "homoousious AND homoiousious" which is dealing with this very question: Is Christ of the father, One with the father, or a man?