Aristides, takes a very similar line to the Preaching, and is thought to have used it. A great assembly gathers to hear Peter. We then have the incident of the dead mean raised by Peter after Simon had failed. Peter's episcopate of twenty-five years, his martyrdom and that of Paul, Nero's death, and a famine which ensued after many years, are shortly told. There are certain other fragments of a 'Teaching of Peter' which may be another name for the Preaching.
Opinion is divided.
Probably the first, from Origen, is from the Preaching. The others are of a different complexion. Origen on First Principles i, prologue 8. The quotation agrees with one from the gospel according to the Hebrews. See p. 4.