Matthew 23: 1-12
Then spake Jesus to the multitude, and to his disciples, 2 Saying, The scribes and the Pharisees sit in Moses' seat: 3 All therefore whatsoever they bid you observe, that observe and do; but do not ye after their works: for they say, and do not. 4 For they bind heavy burdens and grievous to be borne, and lay them on men's shoulders; but they themselves will not move them with one of their fingers.
5 But all their works they do for to be seen of men: they make broad their phylacteries and enlarge the borders of their garments, 6 And love the uppermost rooms at feasts, and the chief seats in the synagogues, 7 And greetings in the markets, and to be called of men, Rabbi, Rabbi.
8 But be not ye called Rabbi: for one is your Master, even Christ; and all ye are brethren. 9 And call no man your father upon the earth: for one is your Father, which is in heaven. 10 Neither be ye called masters: for one is your Master, even Christ. 11 But he that is greatest among you shall be your servant. 12 And whosoever shall exalt himself shall be abased; and he that shall humble himself shall be exalted.
Image: Fra Angelico's fresco Sermon on the Mount, Florence, approx 1440.