From day one in Christianity there has always been different interpretations. It has nothing to do with evolution.

Some die out - some remain - and new understandings of it arise. There is, however, no linear progression. They do not build upon each other with successive iterations. So no evolution in 2000 years of Christianity.

In the main, different denominations share the same core understandings and it is often in the detail that things differ. There are certainly not as many varieties of Christianity as there are Christians.

Blacknad.