What religious changes did the Plague make happen?

Answer 1

There were nothing like antibiotics then. Today we have them and the disease is easily treated. Doctors were powerless against infectious disease then. People were weakened by war and harvest failures. Germs, the fleas which carried them, and the rats which carried the fleas, flourished in the dirty towns.

Many people were angry and bitter, and blamed the Catholic Church. Historians suggest that the Black Death helped to cause a religious movement in the shape of the Lollards, the end of the feudal system and the Peasants' Revolt.
Part of this corruption seen by the Lollards and others involved prayers for the dead and chantries. These were seen as corrupt since they distracted priests from other work and that all should be prayed for equally.

Lollards also had a tendency toward iconoclasm. Expensive church artwork was seen as an excess; they believed effort should be placed on helping the needy and preaching rather than working on expensive decorations. Icons were also seen as dangerous since many seemed to be worshiping the icons more than God.