Matthew 23:6-10

They love the place of honor at banquets and the chief seats in the synagogues, 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.