[glasscollector]

What I dont understand is where this idea of trinity originated in the first place. As far as my knowledge of the Bible, im pretty sure the word "trinity" does not exist in the Bible. So who exactly introduced this idea into the originally monotheistic Christian world? Is there any historical record for it?

The first of the early church fathers recorded as using the word Trinity was Theophilus of Antioch writing in the late second century. He defines the Trinity as God, His Word (Logos) and His Wisdom (Sophia) in the context of a discussion of the first three days of creation. The first defence of the doctrine of the Trinity was in the early third century by the early church father Tertullian. He explicitly defined the Trinity as Father, Son, and Holy Spirit and defended the Trinitarian theology against the "Praxean" heresy. http://en.wikipedia.org/wiki/Trinity#History