Any good books about the early period of christian theology/philosophy? I have been searching for books about the topic but i'm not sure wich ones are worth reading.
In addition to the mentioned book by J. N. D. Kelly, whose 5th and last edition dates from 1977, and which covers the whole scope of Christian doctrines, I suggest these later books on the two fundamental doctrines:
@Johannes the concept of the trinity has been one of my interests lately (it's quite fascinating from a non-christian perspective). Thanks for the help.