John Wycliffe was from england, he did not think the popes words were true and thought the intuitions were very misleading and wrong. He instead, followed the rules of the bible.
Martin luther was very outraged and thought the pope was a devil! How could you resolve your sins by paying money to the church? He thought many things were wrong and wanted the church to know about what he thought could be fixed and printed all of them on the printing press. He posted his 95 theses all over the church.
The church excommunicated him and He knew the church was very angry. He hid away in palace lutheran and disguised himself as another person. He wanted the people to be able to read the bible theirselves, so he translated it to german.
After Martin Luthers death, a very big war had released and it was between the lutherans and the holy roman empire. Killing many people on both sides of the war.