We just learned about Sola Fide.
Another part of early Christianity is the Protestant Reformation.
Around the same time that Martin Luther was disagreeing with how the Catholic church told people to worship God, there were other people that also disagreed in other ways.
With so many people disagreeing with the Catholic church, there were people that started to get together in groups and worship the way they thought was right.
So before where people would have to go to the Catholic church, now they could go meet together and worship the way Luther thought was right, calling themselves Lutherans.
Others thought John Calvin was right, so they met together and called themselves Calvinists.
Some believed people should only be baptised as adults, so they called themselves Anabaptists.
There were even rulers like the King of England who thought he should be the head of the church so he started the Anglican church.
All of these groups together were called "protestants", meaning that they protested or disagreed with the rules of the Catholic church.
The protestant reformation was when a lot of Christians protested the rules of the Catholic church, and "reformed" or decided to worship in a different way.
A lot of times the leaders of the Catholic church did not like this, and tried to have people put in jail or even killed for trying to go against what they said.
Eventually many people left the Catholic church and started their own groups or religions.
(from: wikipedia - reformation)
Kid Facts - Blast from the past: Muslim Conflict
