In the Catholic Answers Magazine 30th Anniversary Issue,
the article from His Excellency Bishop Caggiano’s article: Confronting the Crisis: What the Fathers Teach Us, there is a mention of a “general consensus” that there were 2,500 Christians alive [in the World] at the time of the death of the Apostle Saint Paul - 66 or 67 AD. That number seems quite small to me, I guess I would think it small even if it said 2,500 in Rome. I emailed the magazine to ask if that was a typo - missing one or two decimal points.
Does anyone know a source that might estimate how many Christians there were after some 30 plus years of evangelization since the 3,000 were added in Acts 3:41?
I do understand the point the article was making: that from a very small number of Christians at the time of the martyrdoms of the Holy Apostles Sts. Peter and Paul, our population grew to 23 million Christians by the Fourth Century. That growth would be equally impressive, during the years of persecution, if it were 250,000 to 23 million.