>> “ Is there a directory? A contact person?” <<
.
The Holy Spirit.
Much the same way that Phillip encountered the eunuch in the desert, those that truly seek are guided home.
>> “Where do I find a church?” <<
Through prayer. There is no other way.
>> “Do you say that all churches that you could find in the Yellow Pages, all churches that have a name and an address, even an e-mail address, are false? invalid? Nicolaitan?” <<
Probably not all, but the overwhelming majority. Yeshua’s gate is very narrow, and few there be that find it. That is what he said.
Do you believe that the overwhelming majority of Christians are going to be tortured for eternity in a lake of fire?