How about this for a forumal.
EC - Ecumenical Creeds
TFU - Three forms of unity
BC - Book of concord (smalcad, augsbug, etc)
WCF - Westminster
Orthodoxy = EC + [(TFU - WCF) - BC] + [BC - (TFU -WCF)]
Basically, this means that it is the overlap between the EC, and the Lutheran and reformed faiths.
Only these are authoritative as Lutheranism and Reformed are mutally exclusive from Romanism. Arminianism has no authority as it came in later and is universally condemned (council of orage, BC, TFU, and WCF).
EC - Ecumenical Creeds
TFU - Three forms of unity
BC - Book of concord (smalcad, augsbug, etc)
WCF - Westminster
Orthodoxy = EC + [(TFU - WCF) - BC] + [BC - (TFU -WCF)]
Basically, this means that it is the overlap between the EC, and the Lutheran and reformed faiths.
Only these are authoritative as Lutheranism and Reformed are mutally exclusive from Romanism. Arminianism has no authority as it came in later and is universally condemned (council of orage, BC, TFU, and WCF).