Doctrinal Issues, Trinitarianism, Unitarianism, Arianism
Theories of both authenticity and spuriousness often interweave doctrinal and Christology concerns as part of their analysis of 'Origins', how the verse developed and was either dropped or added to Bible lines.
John Guyse gave a summary in the Practical Expositor that was a type of model for many of the later doctrinal expositions by those defending authenticity from a Trinitarian perspective.
- "the Trinitarians therefore had less occasion to interpolate this verse, than the Antitrinitarians had to take it out of the sacred canon, if any, on either side, can be supposed to be so very wicked as to make such an attempt ; and it is much more likely that (Guyse describes homoeoteleuton or other omission) than that any should be so daring as designedly to add it to the text".
Often those who oppose authenticity take the position that the Comma was included in the Textus Receptus (TR) compiled by Erasmus of Rotterdam because of its doctrinal importance in supporting Trinitarianism. The passage is often viewed as an explicit reference to the Trinity of Father, Son and Holy Spirit, with notable exceptions.
And some defenders of authenticity place doctrinal Christology issues as only auxiliary or secondary, considering the primary issue to be the integrity of scripture. Nathaniel Ellis Cornwall wrote:
- The genuineness of I. John, v. 7, then, is here maintained, not to secure a proof-text of the doctrine of the Trinity, but to preserve the integrity of Holy Scripture. As a proof-text it would be less important than many others if it were wholly unquestioned. But as a part of Holy Scripture it is to be defended with all diligence ... it is rather the integrity of Holy Scripture than the doctrine of the Trinity that is involved in the question of the genuineness of I. John, v. 7 ...
Read more about this topic: Comma Johanneum, Origins