Did early Christians believe that God was a trinity? Is the trinity explained in the Bible? Does Matthew 28:19-20 and 1 John 5:7-8 prove a trinity? What was decided at the Council of Constantinople in 381 A.D.? What did early Christians believe?
A written article of related interest is titled "Did the True Church Ever Teach a Trinity?" URL: http://www.cogwriter.com/trinity.htm