7the greetings in the marketplaces, and the title of ‘Rabbi’ by which they are addressed.
8But you are not to be called ‘Rabbi,’ for you have one Teacher, and you are all brothers.
9And do not call anyone on earth your father, for you have one Father, who is in heaven.
10Nor are you to be called instructors, for you have one Instructor, the Christ.
— Matthew 23:7-10