I believe that this is true in part. yes, Nella actually said this!! Really, I believe that where Jesus is, all true Christianity is.
According to the Gospel of Thomas, Jesus can be found under a rock, so I guess true Christianity is there too.
If there had been no Catholic Church (a coherent network extending all over the empire and beyond) in existence, would it not have been unlikely that Constantine would chose to patronize Christianity in the first place?
In their writings, the immediate successors of the Apostles articulate doctrines that are clearly Catholic (e.g. the Real Presence in the Eucharist). Do you think that people who learned the faith directly from those who learned it directly from Jesus would have suddenly invented a religion that was in contradiction to Jesus’ teaching?
What do you mean when you say the Catholic Church is not the same church as the early church? Can you indicate a point in time when the Catholic Church “was founded” as anyone can point to the founding of the Lutheran, Reformed, or other Protestant churches?
For the record, I believe Jesus is present in Protestant churches (which is
not to say that Jesus did not institute the Catholic Church as the ordinary visible means by which He pours his grace on the world).
I also believe that we can see God’s grace working in non-Christian religions (which is*** not*** the same thing as saying all religions are equally true).