Augustine believed and taught the doctrine of Original Sin. The doctrine teaches that because of Adam’s disobedience and because Adam was the representative of the whole human race (the root of the tree), therefore by his disobedience the whole human race was thrown into misery and sin. He stood in the place of those born of men and women. He believed that death (both spiritual and physical) was the punishment of the disobedience of our first parents.
He taught that all men have free will (liberum arbitrium). What they lacked was Liberty (libertas). Augustine defined free will as the power to make free choices without any compulsion from the outside. In that sense every person has free will and is free to do as he pleases. What man in the Fall has lost is libertas. Augustine (and RC) understands libertas as the ability do that which is required of us. God commands man to be holy and obey Him, but since the Fall man has not been able to do that because he lost the libertas to will to that which is good. Because as Jonathan Edwards later would clearly say is that man choses according to his pleasure and desires, the only problem is that the Scriptures everywhere describe our desires as sinful. Man is free do all that he desires (liberum arbitrium), but in the Fall he has lost his desire to do good (libertas).
At this point RC introduces some helpful Latin phrases (I love the fact that he many times explains what words mean):
- Posse non peccare is the possibility not to sin. This is what Adam and Eve had when they were originally created by God.
- Posse peccare is the possibility to sin. This obviously Adam and Eve did.
- Non posse non peccare is the impossibility not to sin. These all the descendants of Adam until freed by Christ have.
- Non posse peccare is the impossibility to sin. This is what those in Christ will have in the eternal state.
Augustine like all Calvinists rejected Pelagius’ foreknowledge view of election and taught that God predestined according to His good pleasure without “looking into the future.” He predestined not because men believed, but He predestined so that men would believe.
Martin Luther
Some more than thousand years later there came a dispute between Desiderius Erasmus and Martin Luther. Luther taught the Augustinian view of freedom and predestination and Erasmus was on the Semi-Pelagian side, only he seemed to think that this topic has no much significance for the average Christian. Luther responded by saying that how isn’t it of any significance for people to know if they must do things for salvation or it comes wholly by the grace of God. For Luther, the subject of free will could not be divorced from Sola Fide and Sola Gratia and it is therefore important to understand. Luther taught the doctrine of Augustine, who taught the doctrine of Paul, who taught the doctrine of our Lord Jesus Christ.
Luther strengthened the argument of foreknowledge in regards to free will. He said that if God knows all things, then there could be no choice B. Foreknowledge makes certain that our choices will happen. Luther taught that “God foreknows nothing contingently, but that He foresees, purposes, and does all things according to His own immutable, eternal and infallible will.” As RC says about Luther’s view: God wills what he foreknows and foreknows what...