The ones assembled all over the world

"The church ought to be united because it belongs to God. It does not exist only in Corinth, but all over the world, and it is one, for the church's name (ecclesia) means "assembly." It is not a name of separation, but a name of unity and concord."

St. John Chryostom, Homilies on the Epistles of Paul to the Corinthians, 1.1