In my book Authority in Paul and Peter: The Identification of a Pastoral Stratum in the Pauline Corpus and 1 Peter, I claim to have established not certainty, but a balance of probability, that an extensive layer of Pastoral-type redaction overlies this literature. I did so on the basis of an accumulation of converging lines of evidence which came to light in applying different kinds of criteria to relevant passages. Something I did not do, which I propose now to consider and illustrate, is how to weigh degrees of probability that particular passages are later addition or interpolations, whether they can be connected with the Pastoral Epistles or not.