Many people who are interested in apologetics have lots of religious reference books. But suppose you could keep only ONE. Which would it be?
(And I don’t think of the Bible as a “reference book,” so I’m not talking about the Bible here)
I’ll go first: The Oxford Dictionary of the Christian Church. I have an older Second Edition. The Third Edition was considerably expanded, and apparently a Fourth Edition just came out in January. It ain’t cheap ($125 on Amazon) but worth *every *penny, IMHO.