Final answer:
Calvin stressed the importance of personal Bible study, asserted the dominance of faith over works in salvation, and introduced the doctrine of predestination. These ideas were central to his proposal for reforming the Church.
Step-by-step explanation:
During the Protestant Reformation, John Calvin proposed several ideas that were aimed at reforming the Catholic Church. Three significant concepts introduced by Calvin are:
- Calvin emphasized making the Bible accessible to the common people, suggesting that a true understanding of God's power could only come through personal reflection on the scriptures.
- He advocated for faith being superior to good works for salvation, an idea that challenged the Catholic Church's emphasis on the necessity of both faith and good deeds.
- Calvin also promoted the idea of predestination, which is the belief that God has predetermined who will be saved and who will not, independent of individual effort or merit.
These ideas were radical at the time and contributed significantly to the shape of Protestantism and the further decline of Papal authority.