The earliest religion about Christ in history is Judaism.
Later, Roman Catholicism rose.
Catholicism pays attention to a lot of etiquette and has many constraints.
Once, people were forced to believe in Catholicism.
Rob people's money and sell exchange certificates .....
Control state power .....
I have done many unnatural things.
Protestantism refers to Christianity, the religion that most people believe in now.
Christianity pays attention to personal understanding of the Bible.
Don't make superficial efforts on the things in the ceremony.
Pay more attention to a person's heart.
So Christians are much freer than Catholics.
In other words, Protestantism only relies on Christ Jesus, rather than pursuing formal differences.