So then, brothers, stand firm, and hold the traditions which you were taught by us, whether by word, or by letter.
whether by word, or our epistle, that is, by "our" word, as well as by our epistle, and so the Arabic version reads; these doctrines, ordinances, and rules of discipline were communicated to them, both by word of mouth, when the apostles were in person among them, and by writing afterwards to them; for what the apostles delivered in the ministry of the word to the churches, they sent them in writing, that they might be a standing rule of faith and practice; so that this does not in the least countenance the unwritten traditions of the Papists; and since these were what were taught them, "viva voce", and they received them from the mouth of the apostles, or by letters from them, or both, it became them to hold and retain them fast, and not let them go, either with respect to doctrine or practice.