Faciunt favos et vespae; faciunt ecclesias et Marcionitae, is the strong expression of Tertullian, which I am obliged to quote from memory. [Adv. Marcion, iv. 5] In the time of Epiphanius (advers. Haereses, p. 302 [ed. Paris, 1622]) the Marcionites were very numerous in Italy, Syria, Egypt, Arabia, and Persia.