AC 6587 - the internal and external of the church

AC 6587 [2]
A church in order to exist must be internal and external,
for there are those who are in the internal of the church,
and those who are in its external;
the former are few,
but the latter are very numerous.
Nevertheless with those with whom is the internal church,
the external must be also,
for the internal of the church
cannot be separated from its external;
and also with those with whom is the external church,
the internal must be also,
but with these the internal is in obscurity.