Quote:In the 2nd century B.C.E. (two centuries before Christ came to the earth), Egypt had a triad of gods consisting of (1) Horus, (2) Osiris, and (3) Isis.
These were NOT triune gods in the christian sense of three-but-one. Egypt had literally HUNDREDS of gods. There is no meaningful comparison.
Quote:The Christian doctrine of the Trinity defines God as three divine persons (Greek: ὑποστάσεις):[1] the Father, the Son (Jesus Christ), and the Holy Spirit. The three persons are distinct yet coexist in unity, and are co-equal, co-eternal and consubstantial (Greek: ὁμοούσιοι). Put another way, the three persons of the Trinity are of one being (Greek: οὐσία).[2] The Trinity is considered to be a mystery of Christian faith.[3]
Quote: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)[66] 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.[67]
Although there is much debate as to whether the beliefs of the Apostles were merely articulated and explained in the Trinitarian Creeds,[68] or were corrupted and replaced with new beliefs,[69][70] all scholars recognize that the Creeds themselves were created in reaction to disagreements over the nature of the Father, Son, and Holy Spirit. These controversies, however, were great and many, and took some centuries to be resolved.
http://en.wikipedia.org/wiki/Trinity#History