Luke 6:40

40Notοὐκisἔστινa discipleμαθητὴςaboveὑπὲρtheτὸνteacherδιδάσκαλον,fully trainedκατηρτισμένοςhoweverδὲeveryoneπᾶςwill beἔσταιlikeὡςtheὁteacherδιδάσκαλοςof himαὐτοῦ.

A disciple is not above [his] teacher, but everyone fully trained will be like his teacher.