Charles Spurgeon has written in his treatise “A Defense of Calvinism” that:
The old truth that Calvin preached, that Augustine preached, that Paul preached, is the truth that I must preach to-day, or else be false to my conscience and my God. … Calvinism is the gospel, and nothing else.
Augustine, the #1 theologian on Parchment and Pen, and his writings had tremendous influence on the Reformers including Martin Luther and John Calvin. The ideas expressed in his writings form the foundation for the tenets of Calvinism. The question often debated is whether the views of Augustine were held by the early theologians of the church prior to Augustine.
In “Calvinism in History“, Reformed theologian Loraine Boettner acknowledges that Augustine is responsible for formulating these views. Continue reading

Irenaeus was an apologist defending the Christian faith against the Gnostic heresies writing 5 books (Against Heresies) dealing with them. He also wrote a book