Notes on The First Epistle of St. John the Apostle (Author Bishop Richard Challoner (ed.))

4:2 Every spirit which confesseth, etc: Not that the confession of this point of faith alone, is, at all times, and in all cases, sufficient; but that with relation to that time, and for that part of the Christian doctrine, which was then particularly to be confessed, taught, and maintained against the heretics of those days, this was the most proper token, by which the true teachers might be distinguished form the false.

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