Matthew 23:8-13

But be not ye called Rabbi: for one is your teacher, and all ye are brethren. And call no man your father on the earth: for one is your Father, even he who is in heaven. Neither be ye called masters: for one is your master, even the Christ. But he that is greatest among you shall be your servant. And whosoever shall exalt himself shall be humbled; and whosoever shall humble himself shall be exalted. But woe unto you, scribes and Pharisees, hypocrites! because ye shut the kingdom of heaven against men: for ye enter not in yourselves, neither suffer ye them that are entering in to enter.