Mt 23:8-12
As for you, do not be called 'Rabbi.' You have but one teacher, and you are all brothers. Call no one on earth your father; you have but one Father in heaven. Do not be called 'Master'; you have but one master, the Messiah. The greatest among you must be your servant. Whoever exalts himself will be humbled; but whoever humbles himself will be exalted.
