On world religions, I group them into two.
1. Cultural religions:
- For those who follow the religions of a particular culture, family, crowds, etc.
- Theists, Atheists, Agnostics.
- Believers are generally very shallow in knowledge of their religions. Proving otherwise usually results in nonsense.
2. Doctrinal religions:
- For those who believe truth matters.
- Theists, Atheists, Agnostics.
- Believers tend to study their religions thoroughly.
Once the above has been established, I shall disregard the first category and focus on the second.
From the second category, it is easily broken into yet another two groups:
2. Doctrinal religions:
A. Grace based
- God revealed, perfect, truth
- Christianity
B. Work based
- Men made, imperfect, false
- All religions except Christianity
Now, one can start reading Calvin's Institutes.