Awhile back I was able to locate a facsimile copy of an older work, The New Testament in the Apostolic Fathers, on archive.org. This is a cool old book.
The basic idea of the book was to examine possible NT quotations and allusions within the corpus of the Apostolic Fathers and discuss whether or not the AF material had any dependence on the NT. Here’s how the preface to the book states it:
The first duty of the Committee was to agree upon a plan. It was decided to arrange the books of the New Testament in four classes, distinguished by the letters A, B, C, and D, according to the degree of probability of their use by the several authors. Class A includes those books about which there can be no reasonable doubt, either because they are expressly mentioned, or because there are other certain indications of their use. Class B comprises those books the use of which, in the judgement of the editors, reaches a high degree of probability. With class C we come to a lower degree of probability; and in class D are placed those books which may possibly be referred to, but in regard to which the evidence appeared too uncertain to allow any reliance to be placed upon it. Under each author the books of the New Testament are arranged in accordance with these four classes, except that the Gospels are reserved for a section by themselves after the other writings. … Under each class (A, B, C, D) the books follow one another in the present canonical order; and the passages cited under each head are arranged in the order of probability, according to the editors’ judgment, and marked a, b, c, d — symbols to which an explanation will apply similar to that which has been given in connexion with the capital letters. (iv).
So, basically, they go through potential quotations/allusions and provide some rating as to the liklihood of dependence. So a book gets a rating (A, B, C, D) and the readings get ratings (a, b, c, d).
I’ve been wanting to work though the quotations/allusions to the Pastoral Epistles in this book for awhile. I have a little time tonight, so it seems like a good time to start. I’ll have at least one post per book of the Apostolic Fathers. I’ll work through them in the order they appear in The New Testament in the Apostolic Fathers.