The author left one significant thing out...
We worship together because we are His...In Christ...the Body.
The church never was called to bring the unsaved into the church...church was meant for believers. We were called to go out among them.
Just as Jesus took his diciples aside with Him and further explained and elaborated to them what His teachings meant. So to was the church.
Today we invite anybody in and among...rapidly baptize them and then wonder why the problems and the world has become so much a part of the church.....further that the unsaved are taking over.
It seems that today, people are more in a hurry to baptize, than make disciples.
BINGO