Matthew 23:7-12

and respectful greetings in the market places, and being called Rabbi by men. But do not be called Rabbi; for One is your Teacher, and you are all brothers. Do not call anyone on earth your father; for One is your Father, He who is in heaven. Do not be called leaders; for One is your Leader, that is, Christ. But the greatest among you shall be your servant. Whoever exalts himself shall be humbled; and whoever humbles himself shall be exalted.