Contentious (piloneiko). Old adjective (pilo, neiko), fond of strife. Only here in N.T. If he only existed in this instance, the disputatious brother. Custom (sunhqeian). Old word from sunhqh (sun, hqo), like Latin consuetudo, intercourse, intimacy. In N.T. only here and John 8:7 which see. "In the sculptures of the catacombs the women have a close-fitting head-dress, while the men have the hair short" (Vincent).