Erasmus and Luther
For Erasmus, the relationship between God and the human being is rationally and morally acceptable fair play in which both parties have their responsibilities. He follows the teaching of Nominalism: God has promised to grant his grace to anyone who does the minimum that he/she naturally can for receiving grace. “Free choice” means that the human being has the capability of applying him/herself to the things which lead to eternal salvation or turning away from them.Impenitence is a sin that can never be forgiven; moral deeds “attract” grace. For Luther, freedom in moral decisions plays a crucial role in the human community “in front of the world and people,” in relation to the “things below oneself.” But the human being is not free in his/her relation to the “things above oneself,” “in front of God,” or facing the power of unfaith, sin, and demonic evil. Should there be any change in the human’s relation to the realities “above oneself,” it is always a work of God’s prevenient grace effected by the Holy Spirit. Faith is a “new creation” infused into human hearts by God’s Spirit; sola fide is fully a Pneumatological reality for Luther—a fact overlooked in Luther research. The Spirit establishes an intimate union between the Triune God and the human being. Luther creates a massive defense of God’s sovereign grace, sola gratia. The doctrine of two “kingdoms” is the backbone of Luther’s thinking. Erasmus did not make such a distinction; consequently, law and gospel get mixed.