The ante-Nicene Church was, from a political perspective, an illegal network that broke away from the tolerated Jewish religion. This underground status made Christian unity a true challenge. After the Edict of Milan in 313 AD when Christianity became legal, great strides were made towards liturgical and episcopal unity, but that unity developed and flourished from a foundation of unity which extends all the way back to the Jerusalem Church of Acts. I would like to examine three principles of unity in the early centuries of Christianity: government, liturgy, and doctrine.
Read more on Ante-Nicene Church Unity at Called to Communion.