The Cyprian citation, dating to more than a century before any extant Epistle of John manuscripts and before the Arian controversies that are often considered pivotal in verse addition/omission debate, remains a central focus of comma research and textual apologetics. The Scrivener view is often discussed. Westcott and Hort assert: "Tert and Cyp use language which renders it morally certain that they would have quoted these words had they known them; Cyp going so far as to assume a reference to the Trinity in the conclusion of v. 8"