The Highway Forums Announcements What's New on The Highway website? "The Undivided Three: (Trinity)" by Michael Haykin

Among the greatest achievements of the early church is the forging of the doctrine of the Trinity. It received classical expression in the fourth-century creedal statement known to history as the Nicene Creed, in which Jesus Christ is unequivocally declared to be “true God” and “of one being (homoousios) with the Father” and the Holy Spirit is said to be the “Lord and Giver of life,” who “together with the Father and the Son is worshiped and glorified.” Some historians have argued that this document represents the apex of the Hellenization of the church's teaching, in which fourth-century Christianity traded the vitality of the New Testament church's experience of God for a cold philosophical formula. Actually, nothing could be further from the truth. The Nicene Creed served to sum up a long process of reflection that had its origins in the Christian communities of the first century.

This is an excellent article showing the development of the Christian doctrine of the Trinity throughout the early history of the Church. I think you will find it helpfully instructive.

You can read this article here: The Undivided Three: The Doctrine of the Trinity in Church History.