Answer:
Three Main Believe
His teachings rested on three main ideas: People could win salvation only by faith in God's gift of forgiveness. The Church taught that faith and “good works" were needed for salvation. Luther was astonished at how rapidly his ideas spread and attracted followers
His central teachings, that the Bible is the central source of religious authority and that salvation is reached through faith and not deeds, shaped the core of Protestantism. Although Luther was critical of the Catholic Church, he distanced himself from the radical successors who took up his mantle.
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