If you grew up in American evangelicalism, like I did, your grasp of church history, especially of the church fathers, may be relatively weak. Like a good fundamentalist, I grew up knowing all about D.L. Moody, George Whitfield, and Billy Sunday. I also had heard of Martin Luther and John Calvin, although I had more suspicion of them. But the church fathers were Roman Catholics from who knows when, and they didn’t have anything to teach me.
This idea, mind you, was “caught,” not “taught.” Church history has much to teach us, and the church fathers wouldn’t so easily fit into the mold of Catholicism as we know it. The early church fathers, especially, are worthy of study, and to them we owe thanks for an orthodox understanding and articulation of such important doctrines as the deity of Christ, the Trinity, and the deity of the Holy Spirit.
Basil of Caesarea (329-379 AD), a Greek-speaking Bishop in what is now Turkey, was so important a figure in the fight for biblical orthodoxy, that he is remembered as Basil the Great. He may be the most significant church father that most people haven’t heard of. Athanasius gets more notoriety for defending the Trinity contra mundum (against the world), but Basil was right there with him. Basil’s writings against the Arians, and his work On the Holy Spirit, helped to provide the church with some of the terminology that would eventually make up the orthodox definition of the Trinity: “one essence, but three persons.” Read more about Book Review - Basil of Caesarea: His Life and Impact