2 John 1:12

Having many things, &c. Either because they were confidential, or because letters might perish, or fall into the hands of unbelievers, who would interpret them falsely.

For I hope to come unto you. This shows that this letter was not written and sent to a lady at Babylon, as Clement of Alexandria says, but to some one in Asia Minor, or Greece near to Ephesus. For S. John, who was now in extreme old age and infirm, was wont to make excursions to the neighbouring cities of Asia to instruct and confirm them, but not to go as far as Babylon.

That your joy may be full : For the living voice of a Doctor and Apostle, especially S. John, would bring far more joy, instruction, comfort, and devotion than any mere letters.