Nevertheless, this concrete picture of the internal affairs of a late first-century church is absolutely unique. The period is very obscure; these few brief lines illumine it more than pages of narrative. The traveling preachers of Third John are particularly interesting. Similar missionaries appear also in the "Didache," a sort of church manual which may probably be dated in the early part of the second century. In that later period, however, care had to be taken lest the hospitality of the churches should be abused. "But let every apostle," says the writer--the word "apostle" is used in a very broad sense to designate wandering preachers--"who comes to you be received as the Lord. He shall remain, however, no more than one day, or if necessary two. If he remains three days he is a false prophet." Such precautions, we may be sure, were not needed in the case of Demetrius and his companions.
(=2=) =Practical.=--Despite its individual address and private character, the Third Epistle of John is not an ordinary private letter. Like all the books of the New Testament, it has a message for the entire Church. The devout reader rises from the perusal of it with a more steadfast devotion to the truth and a warmer glow of Christian love.
IN THE LIBRARY.--Purves, "Christianity in the Apostolic Age," pp. 272-274, 294-308. Davis, "Dictionary of the Bible": Purves (supplemented), article on "John, Epistles of." M'Clymont, "The New Testament and Its Writers," pp. 144-149. Ellicott, "A New Testament Commentary for English Readers," vol. iii, pp. 467-502: Sinclair, "The Epistles of St. John." Westcott, "The Epistles of St. John." Zahn, "Introduction to the New Testament," vol. iii, pp. 355-384. The two last-named works are intended primarily for those who have some knowledge of Greek, but can also be used by others.
In the Student's Text Book it was maintained that the Apocalypse was written by John the son of Zebedee. The strongest objection to this view is to be found in the striking difference of language and style which exists between the Apocalypse on the one side and the Gospel and Epistles of John on the other. The style of the Apocalypse is extraordinarily rough; in it the most elementary laws of Greek grammar are sometimes disregarded. Such peculiarities appear scarcely at all in the Gospel; the language of the Gospel, though simple, is perfectly grammatical.