Matt 23:8-11
You all have a single Teacher, and you are all classmates. 9 Don't set people up as experts over your life, letting them tell you what to do. Save that authority for God; let him tell you what to do. No one else should carry the title of 'Father'; you have only one Father, and he's in heaven. 10 And don't let people maneuver you into taking charge of them. There is only one Life-Leader for you and them — Christ.

11 "Do you want to stand out? Then step down. Be a servant.

a single teacher.