[quote=Katholikos]As I understood this concept when I was Protestant is that some, but not all, Christians belong to two churches – their own denomination and this “invisible church of all true believers.” The canard is that is that there is no way to know if one is a “true believer” (though one may certainly believe that one is included among the “true believers”) until one dies and wakes up in heaven. All of these “true believers” adhere to conflicting and competing doctrines in their various denominations, so what is “truth”?
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I’m surprised no one has made reference to the Westminster Standards:
Chapter XXV
Of the Church
I. The catholic or universal Church, which is invisible, consists of the whole number of the elect, that have been, are, or shall be gathered into one, under Christ the Head thereof; and is the spouse, the body, the fulness of Him that fills all in all. (1)
II. The visible Church, which is also catholic or universal under the Gospel (not confined to one nation, as before under the law), consists of all those throughout the world that profess the true religion; (2) and of their children, (3) and is the kingdom of the Lord Jesus Christ, (4) the house and family of God, (5) out of which there is no ordinary possibility of salvation. (6)
III. Unto this catholic visible Church Christ has given the ministry, oracles, and ordinances of God, for the gathering and perfecting of the saints, in this life, to the end of the world: and does, by His own presence and Spirit, according to His promise, make them effectual thereunto. (7)
IV. This catholic Church has been sometimes more, sometimes less visible. (8) And particular Churches, which are members thereof, are more or less pure, according as the doctrine of the Gospel is taught and embraced, ordinances administered, and public worship performed more or less purely in them. (9)
V. The purest Churches under heaven are subject both to mixture and error; (10) and some have so degenerated, as to become no Churches of Christ, but synagogues of Satan. (11) Nevertheless, there shall be always a Church on earth to worship God according to His will. (12)
VI. There is no other head of the Church but the Lord Jesus Christ. (13)
[1] EPH 1:10-23; 5:23-32; COL 1:18
[2] 1CO 1:2, 1CO 12:12-13; PSA 2:8; REV 7:9; ROM 15:9-12
[3] 1CO 7:14; ACT 2:39; EZE 16:20-21; ROM 11:16; GEN 3:15; GEN17:7
[4] MAT 13:47
[5] EPH 2:19, EPH 3:15
[6] ACT 2:47
[7] 1CO 12:28; EPH 4:11-13; MAT 28:19-20; ISA 59:21
[8] ROM 11:3-4; REV 12:6, 14.
[9] REV 2-3; 1CO 5:6-7
[10] 1CO 13:12; MAT 13:24-30, 47
[11] REV 18:2; ROM 11:18-22
[12] MAT 16:18; PSA 72:17, 102:28; MAT 28:19-20
[13] COL 1:18; EPH 1:22