Back as promised, my apologies for the delay.
As stated in a previous JMM, I assent to the biblical definition of “church”, which the word of God describes as an ἐκκλησία which literally means "an “assembly of people called out from the world and to God.” Thus the “church” consists of all those who belong to its head, Jesus Christ (1 Cor 1:13, Gal 3:28, Col 3:11).
“Body of Christ” is a popular NT metaphor for “church.” This is affirmed by many Scriptures, which include Rom 12:5,; I Cor 10:17, 12:27; Col 1:24; Eph 4:15-16, 5:23, and Heb 13:3, just to name a few.
Consequently I believe that which is God-breathed clearly defines the church, aka Body of Christ, as every single person who belongs to Christ through a transformation of their hearts of stone into a heart of flesh by a quickening of the Holy Spirit. Thus the true church of Christ consists of Believers everywhere and is not restricted to any particular organized religious institution.
Have a wonderful weekend!