a master-teacher who goes before as a guide: the authoritative instructor a follower is trained by and looks to
This word appears only once in the whole New Testament, in Matthew 23:10, where Jesus tells his followers not to let themselves be called by this title, "for you have one instructor, the Christ." It names a teacher, and in that verse it stands right beside the ordinary word for "teacher" (διδάσκαλος) that Jesus had used two lines earlier.
What sets this word apart is a picture buried in its roots: it comes from a verb meaning "to go before, to lead the way." So the person it names is not only someone who hands on information but someone who walks ahead while others follow, a master and guide at once. That is why English translations hover between "teacher" and "master" on one side and "leader" or "guide" on the other.
In the Greek-speaking world of the first century the word had a settled home in education. It named the head of a philosophical school, or, in the everyday letters that survive on old scraps of papyrus, a private tutor hired to give one student individual instruction, as distinct from the household attendant (παιδαγωγός) who merely walked a child to his lessons. Some scholars think Jesus reaches for exactly this flavor: not a generic teacher but a personal tutor, the one master a disciple is bound to.
Whatever the precise shade, the weight of the sentence falls on its last two words. Of all the rare places where Jesus names himself, this is one: the single guide who has gone ahead of his followers on the way is "the Christ."
Disputed
Whether καθηγητής in Matthew 23:10 carries a distinct nuance beyond the generic "teacher" of διδάσκαλος in verse 8, and if so what that nuance is.
- majorityStylistic variation: Matthew varies his Greek vocabulary for rhetorical effect while the underlying concept is the same as διδάσκαλος, a single Semitic term possibly lying behind both verses.; Ulrich Luz, Matthew 21-28 (Hermeneia, 2005), on 23:8-12; R. T. France, The Gospel of Matthew (NICNT, 2007), 862-867; Donald A. Hagner, Matthew 14-28 (WBC 33B, 1995), 660-663
- minorityA distinct semantic nuance: the Hellenistic sense of "private tutor" attested in the papyri, so Jesus claims to be the disciples' sole personal instructor.; Bruce W. Winter, 'The Messiah as the Tutor: The Meaning of kathēgētēs in Matthew 23:10,' Tyndale Bulletin 42.1 (1991): 152-157
- minorityA Semitic background pointing to a distinct Jewish title, with a possible polemical allusion to the Qumran Teacher of Righteousness.; Ceslas Spicq, 'Une allusion au Docteur de Justice dans Matthieu XXIII,10?' Revue Biblique 66 (1959): 387-396