Parallel
Matthew 23:10
Patriarchal Greek New Testament (1904) · Berean Standard Bible
μηδὲ κληθῆτε καθηγηταί· εἷς γὰρ ὑμῶν ἐστιν [ὁ] καθηγητής, ὁ Χριστός.
Nor are you to be called instructors, for you have one Instructor, the Christ.