Acts 11:26
and when he found him, he brought him to Antioch. So for a whole year Barnabas and Saul met with the church and taught great numbers of people. The disciples were called Christians first at Antioch.—Saul and Barnabas's year-long teaching ministry (didaschō, 'teach,' implies systematic instruction) produces numerical growth; they are co-laborers. Most significantly, 'the disciples were called Christians first at Antioch' (chrēmatisai to onoma Christianoi prōton en Antiocheia)—the title 'Christian' (adherent of Christus) first appears here, a name likely given by outsiders, yet embraced by believers. The location (Antioch, a Hellenistic city) makes sense; the term distinguishes Jesus-followers from Jews and from other sects.