This Gospel is uncomfortable for anyone with any kind of authority: priests, parents, teachers, committee members, older siblings. Jesus does not say the Pharisees taught the wrong things. He says they did not live them, and they liked being honoured more than serving.
It is easy to point at others while reading this. Jesus means us to look at ourselves. Do we ask more of our children than we ask of ourselves? Do we enjoy titles and front seats? Do we lay burdens on people and then walk away?
The answer Jesus gives is simple and hard. The greatest is the servant. He showed what that means when he washed his disciples’ feet and went to the cross. In a family or a parish, the person who most resembles Christ is not the one with the title. It is the one who serves without being seen.