Somehow, poor John Calvin has his name associated with a certain breed of hardheaded, argumentative, internet-addicted, theological-nitpicking jerk. This is really too bad because John Calvin (though I personally would not go so far as to say that he completed the Reformation that Martin Luther started) was a brilliant man who wrote insightful Bible commentaries and sound, orthodox theology. Besides that, lots of people of the Reformed/Calvinist position aren’t jerks and are open to thoughtful discussion of their beliefs, including things besides predestination again.
I’m not saying I agree with everything John Calvin ever wrote, especially regarding icons, and I’m not overly committed to the mechanics of predestination, but he is worth reading. And worth reading for more than predestination.
So if all you think of when you hear, “John Calvin,” are those hardheaded jerks and endless arguments about predestination, please read his words on the Holy Trinity here (for those with their own print copies of The Institutes of the Christian Religion, it’s Book I, Chapter 13).
There you will find defense of the word “person” as well as a very brief history of it and its use (nothing as mind-crushing as Zizioulas’ in Being As Communion), a defense of the divinity of both the Son and the Holy Spirit, and a discussion of how the Unity in Trinity runs down the middle course between Arianism on the one hand (only the Father is God) and Sabellianism on the other (all three are different “modes” of God’s being).
For those who are thinking, “You say The Shack isn’t really theology, but where do I turn?” Turn here! It is briefer than Augustine’s On the Trinity, more modern than Boethius. Here you will find the true, orthodox doctrine of the Most Holy Trinity expounded. It is honey and sweetness to your ears, balm to your soul! Read it and praise the Father, praise the Son, praise the Spirit — Three in One!