well that is true for the ineffable God outside of time and space. Jesus who is God and part of the Godhead did enter "time" and did grow in His human form in time
I still don't understand what you are trying to refer to - the early Church I read in the New testament books, in the Didache and in the works of the early Church fathers
These two are good collections of early church writings
Do you mean some theology or belief system or organization specifically?
I mean the apostolic church before it became institutionalized into a political force, i.e. the Holy Roman Empire, and all the corruption that led up to the Orthodox schism and the Protestant Reformation.